1978 Bayliner Electrical System

by Jim
(Sheridan, Or)

I have this bayliner mentioned above. After running hard for 20 or so minutes (full throttle), all and I mean ALL electrical system shuts off, radio, radar, gps, lighting, engine, ignition, regardless which position the battery switch is in (1,2 or ALL). Then all power is restored, sometimes in a few seconds and sometimes in as much as 2 minutes.


Anyone encounter such a problem? The boat has 350 Chevy engine in it.

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Apr 15, 2012
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electrical problem on fishing boat
by: Anonymous

I am receiving shocks from all switches when engine is charging batteries ...why?

Aug 10, 2009
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Not the starter
by: Anonymous

Have tried 2 new starters. Both were bench tested under load. Both were good before installed. Not the starter.
I am told it is thermal not electrical. Anyone knows where the thermal overloads are located? There are two. Have found one but can't seem to locate the other.

Aug 09, 2009
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starter..
by: boatman

check the connection at the starter...

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Popping Blower Fuses

by Ductape
(Willsboro NY)

I've got a 1996 2050 Bayliner Capri, Mercrusier V8 I/O. The blower stopped working so I checked the 5Amp fuse and sure enough it was blown. So I put another in, turned the blower on, it worked for about 1 second and popped the fuse again.
I left it as-is while en route to the dock. On the way home the depth finder stopped working (directly wired to batter)...the positive connection ripped from the battery terminal (it was rather wavy :) I tell you this just as a matter of fact/coincidence even though I don't think it plays a role. I fixed the connection and the depth finder works great (although wires need to be replaced as copper is corroding).

I replaced the blower's 5Amp fuse with a 10Amp fuse just to see if it would work, it did, but sounded like a cat was stuck in it. I flicked it on/off a number of times over the next couple days with the same cat-like sound. While removing the blower hoses I found a Rice Crispy Treats wrapper stuck in the fan blades. Took that out, turned it on and it ran perfect. When I clicked it off however, the 10Amp fuse blew. Tossed another 5Amp in for sake of argument, and it blew as soon as I turned the blower on.

Everything else on the panel is working fine (Navigation lights, horn, bilge, accessory) except the stern light. I don't believe the stern light is a panel/fuse issue, the stern receptacle has never seated properly.

Any ideas on what I should/could be looking at for the blower fuse?
Thanks and have a great day.

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short?

by Bryan
(Key West)

I'm trying to start my boat and as soon as I tried to trim down the engine, lost panel indications and battery appeared dead. then let go of trim button and indications came back. suspected a short. tried again and engine trimmed down. when I tried to start the engineit happened again. I think its a short. After close inspection i dont see anything out of the ordinary or looks like wires that might be grounding.
anyone have this experiance or any suggestions on how to find the short?

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electrical problems in pontoon ignition, trim and gauges.

by Chuck
(Lake of the Ozarks MO.)

Went to start my pontoon boat before putting it in the water. Charged the battery, hooked up the cables, went to start and it has no power to the ignition, trim and some gauges, lights, depth finder and horn works but nothing in the ignition. The boat is a 1988 sundancer with a 90hp evinrude. could there be a fuse I need to check or a rodent chewed a wire in half?

Thank you in advance for your input.

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Electrical Issues

by Jon W. Spiers
(Jackson La.)

Hi my name is Jon W Spiers.
Just purchased a 1993 Bass Tracker Pro 17 about a
Month ago. Motor ran good with water running through
it while checking it out. One week later started it up at home just fine. Decided to take it out the following
Saturday. My Luck!!!
Motor will only spin over like it’s not getting fire or gas.
Used the power trim to lower motor and lost all power.
Batteries are dead with 3.7 volts now.
Checked all fuses, wire connection, and what ever
anyone will suggest. Found nothing.
Installed a new ignition switch, new batteries.
Still nothing, Any Help will be Greatly Appricated.
Thanks for your time. Jon

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elec. power

by kelvin
(havelock nc)

my engine runs fine but i have no power to any of my electronics. this gives me no power to bilge pump, livewells, or lights.

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Electrical

I am trying to put in a new switch for my white lite when I get it all wired up and turn the power off it blows a fuse what could it be its seem to be something in the ground. What could it be??

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FUSE?

by Leon
(Padre Island , Texas)

Question to all my boat mechanics out there.....if the power pole and the jack plate work for a minute or two after turning all batteries on then stop working completely.....I have more than likely blown a fuse correct??? All other power units are working....radio, bilge, trim running lights.....

Now....The green power light is also on...on the power pole control unit....it will go up and down manually but the control on the dash does not work....for either the jack plate and the power pole....all fuses are solid, unless I am missing one, which is quite possible.

Any advice is well come! Thanks

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fuses soaking wet after trip

by George
(MA)

corrosion and water on all exposed electrical

corrosion and water on all exposed electrical

Grady 25 CC 2003 single 225 outboard: GPS wouldn't boot before a trip, saw that all fuses and connections in electronics area were wet and corroded. Cleaned every lead, replaced fuses, coated fuses in dielectric grease. Went on next trip, checked fuses at end, all (including batteries) covered in salty (could be coincidence) tasting water. Shut off power and rinsed with fresh water. Called dealer, no idea of what could cause it. We have had heavy rains of late. Not sure what to do next.

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Electrics

by Daren
(Mandurah Perth. Wa )

My 190 crown line wont do anything when I turn the key, but radio/ horn lights work

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electrical problem

by Bill Darby
(Hot Springs, AR)

I have no power to the panel switches, the gas gauge. There is power coming out of the 30 AMP breaker . Is there another breaker some where else?

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Fuses keep blowing

by Sheri McDermott
(Estancia New Mexico)

We have a 2007 Baja and almost every time we take it out the fuses blow for the lower unit. We have talked to a mechanic concerning this problem he stats that they should only have a 30 amp fuse but the use 50 amp fuses. Any insite on what the problem might be.

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electrical problem on 1990 4 winns 4.3L omc cobra I/O

Cannot start engine or raise or lower outdrive. Have a new fully charged battery. Starter was dragging the last few times I started engine but it would then fire. Now trim does not work . Checked all fuses at panel and the two 50 amp fuses atop engine. Lights, bilge pump, blower etc. work. I can hear a clicking sound from assist solenoid ( not sure if that is correct term) atop engine when using trim switch. The starter solenoid also clicks when turning ignition switch on but nothing happens when I short terminals at starter solenoid. I do not have a manual or wiring diagram yet but will be ordering one soon as I am in the dark here. What could be common that causes both start circuit and trim circuit to stay open. I have continuity through assist solenoid atop engine and have 12 volts across that.
Thank you,
G Dustin

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May 24, 2010
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Wiring
by: Anonymous

Check your wiring,I had same problem.

Jul 29, 2008
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Boat Parts
by: Anonymous

Try looking on Go2marine.com. If you can't find the information, call their technicians.

Thanks,
BoatWoman

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Engine electrical problem?

Motor will not stop when key is turned off. It is a 1985 115 hp mercury. It has been working very well until last two times used. I have replaced the ignition switch with new but still the same problem. What engine component could be the problem?
It is also acting like it wants to ground out or quit when running at higher speeds then won't shut off when brought down and key turned off.

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Electrical problems i lose over half my electrical on my 2010 Bass Cat Puma ?

My trolling motor both of my GPS is and half of my other electrical not working ?

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Honda 150 Blown Fuses

by Ron
(Morgantown, WV)

Honda 150 outboard starts and runs, but most always when thottling up blows the 15 amp fuse in the motor. If in neural and thottling up, no problem, just when in gear.

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wiring problem

by dave
(ontario)

i have a 1975 sea ray sundancer 24 ft i got it with no engine and its missing alotta the wiring to hook up the battery and stuff all i have is the main engine harness and the instrument panel wiring im wondering how do i set it up when i get my engine or whats an easy way to re-wire it i have no wiring diagrams and dont know which wires go were. should i disconnect everything and start from scrtach or does someone know where to find a good simple diagram

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Nov 01, 2011
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1975 searay caddy cab
by: Rick Quirk

hi im also lookinh for a wiring diagram for my 1975 searay 23" overnighter if you happen to find one please email me a copy or any information Rick.Quirk@arabuilding.com.au hope your project is going well

thanks in advance

Rick Quirk


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No lights on bow or in rear

I have a 2001 Crownline 205 BR and my bow and stern light isn't working.

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Jun 25, 2016
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by: John

Check the fuse?

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Challenging Boat Electrical Question

1-We are given a system -Circuit- consisting of two black boxes.
2-One of the two black boxes is on the right side and the other on the left.
3-The two black boxes are to be connected using pair of simple conductors.
4-One black box consists of battery E and resistor R connected in series.
5-The other is simply a short circuit.
6-When the two black boxes are connected to each other using the conductors it's expected to have:
I=E/R
V (across any black box) =0
7-We will be allowed to access the conductors and mount any measuring devices on them before and after the two black boxes are connected.
8-We are not allowed to disturb the system -change I or V- as soon as the two black boxes are connected.
9-The question is: Where is the short circuit -Right or left?


I need to discuss all possible solutions to this problem
*In the ideal and practical case
(Ideal measuring devices and zero ohm conductors)
*In the transient or steady state
*In the microscopic or macroscopic view
(Electrons behavior of propagation)

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Sep 08, 2007
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Boat answer
by: Anonymous

Once the black boxes are connected there is no short circuit. The resistor is the load and the "other" box containing the pre-assembly "short circuit" just becomes a length of conductor

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cajun boat wiring

by dave
(illinois)

Yesterday i went out to start the boat to see if every thing worked while running the boat everything worked ok.then the gas and rpm guage and livewells all quit working.is there fuses i can look for.i have a 1990 cajun tournament series bass boat.

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Boat has no power!!

I have a 2005 Glastron MX175 with a 3L Volvo Penta motor. My problem is that it has no power, it will not pull itself out of the water. It will not rev past 3000 rpm in gear. It has good compression, plugs have been changed and has fresh fuel and filters and the choke is working fine. What could it be?

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crossed wires on battery smoke coming from alternator

by Garry
(Kamloops BC Canada)

crossed the wires when hooking up the battery on my mercruiser 4.3l inboard. Smoke started coming from the alternator. Have i ruined the alternator. Need suggestions. Thanks

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Fuse box

by Larry
(Wellsville PA USA)

I just purchsed a 1989 arriva bow runner and I cannot find the fuse box any ideas?

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Dash lights

by Michael Scott
(Zanesville,Ohio, United States )

I have a 1986 galaxy with a 140hp in board. My issue is my dashboard lights stay illuminated on rpm and the odometer.my email is mos7418@gmail.com

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no assesory power

I have no power to any of my assesories

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Voltage Fluctuation

by Dave
(Peterborough, Ontario)

I own 1998 Smokercraft boat with 30hp Mercury ELPTO engine. Recently I have been experiencing an intermittent electrical problem. On occassion I notice my voltmeter on the dash starting to vibrate, then the movement becomes more intense. At times it bounces back and forth on the dial. Lights on the dash start to change intensity as the voltmeter fluctuates. In addition, the tach also starts to fluctuate. Only happens at high speed (around 4900 rpm) and doesn't happen all the time. During an occurance when I drop the speed down everything will stabilize. I have checked visible wiring for possible damage, shorts, etc. Had it into my local dealer and he couldn't find the problem as it didn't occur while he had the boat. Need to get the problem fixed before I damage the engine. I have been told that it may be a bad ground somewhere, or possibly the voltage regulator. Any suggestions.

Dave
Peterborough, Ontario

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marine electrical school

how do i enroll on a course at the electrical school, everytime i try i get an eror page?

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Feb 21, 2009
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Electrical School
by: Ashley

hi my names ash ive been trying to enroll in the electrical school, all i get is an error page? is the school still running?

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new battery no power

I bought a used bass tracker with a 15hp mercury outboard that had been stored for 3 years. I put in a new starter battery and get no power anywhere. Test light at key switch or any where under dash, no power. I checked all fuses and replaced just in case, still no power.

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Ranger R70 electrical

by thomas
(Spartanburg SC,USA)

My boat has been sitting up for awhile and now none of my dash panel or bow switches work. I have checked the reset switch and it is engaged but nothing at all works. Ideas?

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possible electrical problems on a sea ray causing power losses

by Joe
(Lake of the Ozarks, MO)

I have a 97 Sea Ray with a 4.7L Bravo engine. Earlier this year my boat started loosing power at both low and high RPMs. The engine does not shut down completely - just a fast drop in RPMs, a hesitation and the it will power on again. I have changed gas, oil, etc. and now it seems that there is an electrical problem. I have not been able to find the problem. Any ideas would be helpful.

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how to find faults in wiring

by Gary
(MN)

The battery was dead and is recharging on our Glastron 175 ssv, however there is an electrical drain somewhere in the system. We suspect it is in the shifter. Anyone with similar experience/know how /what to fix?

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fuse keeps on blowing if I use my TMC electric toilet

by Hola
(Miami)

Can't figure out why my fuse keeps on blowing every time I use the switch. Used to work for a while but always had problems with the switch had to toggle several times before flushing. Any ideas?
Thanks
Heiko

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Wellcraft electrical problem

by Wendell
(Orange park, Fl )

I have a 1996 Wellcraft 23 coastal cuddy. The motor starts but nothing works electrically, (horn,radio navigation lights, builges). all fuses are good. any suggestions?

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Blows 30 amp fuse

by Jack
(Okeechobee fl)

Blows fuse when put in drive Suzuki 70 four stroke

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2002 Stingray electrical

by Barry
(Oak Cliff Tx)

2002 Stingray electrical

2002 Stingray electrical

Hello, I was wondering if someone could share wisdom on how the electrical system of my cruiser works.

I have 2002 Stingray 240CS that has shorepower and I think an inverter on the interior that converts DC to AC power while out on the water if I'm not mistaken. I know that the refrigerator is AC or DC current and feel that the ac outlets inside the cabin would work either off AC or DC current.

I installed a LED TV on the interior and it will come on when pluged into shorepower but when out on the water I don't have current to the plug and can't find any breakers.

Thanks,

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Fuse blows when trying to start

by Jerry
(Moore okla usa)

I have a 1998 four winds horizon with a 4-cylinder volvo engine. All of a sudden very time we try to strt it the starter blows th 15 amp fuse?

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bilge pump fishfinder,live wells and horn doesn't work

On my crestliner I have a accsory switch which runs my live wells,radio and fishfinder. I also have a switch for a bilge pump. Sometimes everything turns on fine and most times nothing will turn on at all. Where do i start to look for the problem. also the horn is the same. somtimes it works moost times no. thanks for your help.

corey

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wiring

by Tom Hite
(Arcanum, Ohio)

Blowing fuses and pumps don't work. How do I get to the bottom of the problem?

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Aug 22, 2013
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Could it be your starter?
by: Anonymous

Our boat wouldn't crank one time this summer and it was because our starter had gotten wet (don't ask how ..lol). Once we had the starter dried out it quit blowing fuses.


Sep 09, 2010
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electrical proplem triton bass boat
by: Anonymous

do triton bass boats have fuse panel

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Insturment panel lights

by Marshall dalton
(Somerset KY U.S.)

What is the green light with the bulb with the tear drop in it and should it be on all the time

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short circuit in wiring

by Harold
(Bangor Mi. usa)

I have a 1985 starcraft 170 17"6" bass boat I have bad short in the wirering someware looking for a wirering diagram for it

EDITOR NOTE. You don't get shorts in wiring, these are always in connection blocks or connection points. Submit a question with what your fault is. If you have a short you will have smoke and heat.

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Electrical Problem

by Brian Bingham
(Half Moon Bay CA )

I have a 2015 Mercury 115 Four stroke, installed a second battery and arcked the cables when I was installing. Lost all power to motor and the safety cord makes a continuous peeping noise. Checked all fuses and cant seem to find a bad one any help would be appreciated.
Thanks

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Power/Electrical issue

by Randy
(Oklahoma City, OK)

I have a power problem on my Mercruiser 4.3L Alpha. I was on the water and my battery started losing power (old battery). I used a jump box on the battery and hooked it up on the wrong terminals. Amateur mistake, I know. I bought a new battery, but no power at all. All fuses seem to be ok, is there another common problem that I can troubleshoot?

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Electrical problem

by Johnny
(Horatio ar)

No power at console no tilt power. Trolling motor has power. All batteries at full charge except one. 2006 ranger z20 225 yamaha

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Boat Electrical Problem

by Chuck

When on shore power or using the genset my batteries are drained running the frig/freezer 12 VDC motor for belt driven compressor. It is a Grunert system converted to all DC from batteries or alternator. The fridge is about 4 cu feet, the freezer about 5 cu feet. or maybe vice versa. So I bought an 80 Amp AC to DC converter. Yesterday I disconnected the red cable connection at the battery leading to the DC distribution panel and switched off the charger. Then connected that cable to the Red + on the converter and the Black - to the Battery minus post. Then switched on the refrigeration CB as usual. It worked great. The entire boat's DC load was powered by the AC to DC converter. And the Refrigeration system worked super without draining the batteries!!!! yea!!

Now I am trying to figure our how in the Sam H to make it so all I do is flip a set of switches to power the distribution panel with either the batteries or the AC to DC converter.

First an AC set of CB's for controlling AC to the Charger or the Converter. Easy, a set of AC CB's with a device that allows only one or the other.

Second, I imagined a DC switch that would either connect the distribution panel to the battery or the converter. These are big wires so not really sure what type of device to use that would allow the AC CB's and this switch to act as a pair. i.e. when the converter AC is on then the switch must be positioned to disconnect the battery from the distribution panel and connect the output of the converter to the panel. This is where I am stuck! Anyone know the solution? Thanks.

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Feb 02, 2008
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boat electrical problem
by: dave

i'm confused. you shouldn't run any loads straight from a battery charger without the charger being hooked up to a battery. i would look at the ground going to the battery from the charger. put a voltmeter on the battery when the charger is running. if the battery was bad you would still get a reading.

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accidental reverse polarity

by Jon
(Cape Coral, Fl)

I have a Blue Wave 160 with Suzuki60hp 4 stroke. I accidently reversed the battery polarity. It will do nothing electrical now. Can anyone help?

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electrical issues

by Jasen
(Haiku HI US)

Outboard problem

Outboard problem

Went to start motor and nothing. The tilt on outboard was working but not on the tiller steering. Noticed that fuses were burnt so i replaced them. They kept burning. I wrapped wire around fuses to get it started. Then drove 6 miles to harbor. Everything was fine. Shut off motor. Went to rinse motor and as soon as i started motor the electrical box started smoking. Heavy white smoke! Please help! What seems to be the problem?

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No electrical power

by Roy wallace
(Olive branch, ms)

I recently bought a new gas tank arm that goes inside my gas tank on a 2006 bass tracker. Put it on, now I have no power at all. Charged up batteries but no go. Don't see how that would affect power?

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Electrical power problem.

by Richard
(Florence, Ma. 01062)

None of my accessories work. The fuses are all good. Can't find a circuit breaker for accessories on my 1989 Chapparal 17.8. Old boat, but like new condition. Info not in original paperwork.

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electrical problem on 98 glactron trim handle

by chris
(az)

the trim handle has an electrical problem inside of it. i think it may be a short or loose wire inside but not sure the problem is causing the ignition switch to not turn on and it cuts out when i click the trim switch. then it comes back on out of no where. how do i fix this?? thanks..

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Fishing boat electical accessory problem

by Brandon

I've got a Lund Pro-V fishing boat. It has a new automotive type starting battery. I have no problems starting my 150 Evinrude or my 9.9 Yamaha, however I don't have much for power while I run my accessories, even while either engine is running (they both have alternators). There is a seperate bank of batteries for my electric trolling motor.

About the most the system can handle is running the radio and fish finder. Anything that I turn on after that such as livewell and bilge pumps or navigation lights, the radio and/or fish finder shut down. The connections seem to be good as each accessory runs well on its own. Is this a wiring or fuse problem or a battery problem? Any advice on where to test things next would be greatly appreciated.

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May 16, 2010
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Rewire Radio And Fishfinder
by: mike simons

Try Running Radio And Fishfinder Straight off the Battery.

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Electrical issue

by Ron
(Jacksonville )

2015 Fiesta Family Fisher 22 feet. Dashboard electrical not working. No radio, no horn, none of the light switches. Figure it has to be a main fuse or a reset button but I can’t find anything. Anyone have any ideas?

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blown fuses

by Don
(Dubuque Ia)

My Mercury 40hp efi motor keeps blowing fuses. After cooling down I replce fuses and it starts up fine til after take off again.

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reverse polarity on a 2005 OMC 3.0l

by John
(Dorset, ON)

On a dark and rainy night yesterday, I used a borrowed battery to attempt to start my OMC 3.0 l, in my haste, I assumed the polarity was the same as my battery. With my nearly drained battery, I could run the electronics but was not turning over the starter. After my reverse polarity touch and attempted start, I am no longer getting any power to the electronics. I checked all 6 fuses for the electronics, the engine circuit breaker and two 20 amp fuses, everything is good. Next step?

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electrical

240 searay while running boat just cut off. when try to restart nothing starter does not turn. nothing. all gagesn work and i replaced the starting switch. still nothing

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No Main Power

by Brian
(Andover, MN)

I took my Lund 1700 Fisherman out of storage today and fired it up.. However while boat was running I notice the Main power switch which runs Graph, Livewell, Etc.. does not work. I check the fuses and they are good. Does anyone else have idea's??? Also, the Starting battery is new..

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Oct 22, 2008
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ACC WIRING
by: Anonymous

WHEN YOU HOOKED UP THE BATTERY YOU MISSED ONE WIRE THE ACC WIRE.

Jul 06, 2008
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same problem on 2005 MR PIKE Lund
by: Anonymous

I have a similar problem but it only effects my livewells. Not getting any power to the lighted switch on dashboard, I checked all fuses and even bought new ones. Then evened changed the switch out but no luck. Any buddie have an ideal?

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voltage spike

by Jeff
(Brandon, Florida)

While running the main engine (4108 Perkins) & the generator (Phaser) at the same time the voltage spikes to 17V. The Ray Marine auto pilot control head in the cockpit gives a warning beep and says low voltage. Never had this problem till a couple of months ago.

ANSWER
Sounds like alternator fault, not sure why that would be when both run together but 17 volts is way to high and will damage things, check alternator regulator or one diode in rectifier bridge faulty and as to why alarm is low voltage, thats a mystery to me

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Battery draining when not in use

by Ashley
(Calgary, Alberta, Canada)

We have a 1971 Mercury 400 Thunderbolt Ignition outboard motor. Recently we have been having issues with the electrical on the boat. Somehow, even if the boat isn't running, the motor seems to be draining our deep cycle battery. I was wondering if anyone had some insight on this. I'm assuming it has something to do with the wiring because we have ruled out the chance of a faulty battery. We actually bought a brand new battery and it is doing the same thing.

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no power!

by Rhonda Fenner
( Grand Lake, Grove, Oklahoma)

I have a 1988 Procraft 19 ft. bass boat. Boat was taken out of the water last week and was running fine. Went to put it back in and nothing has any power. Batteries are not the problem.

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electrical issues on my 2007 23JC Neptoon pontoon boat

by Gloria
(Maryland)

my depth finder, radio and lights all went out suddenly, what happened?

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Reversed polarity

by Tvin
(Oklahoma)

accidentally reversed polarity on my bayliner 195. The trim works but I have no other power (horn, ignition, blower, etc.)

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stratos bass boat electrical problem

the motor runs fine, but the bilge pump, the aerator pumps. and the tach don't run.

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Marine wiring schematic

by Ron Phillips
(West Australia)

I am a volunteer with Australian Indigenous Community Volunteers and I am involved with a project in Derby Western Australia.

The project is to train six aboriginal trainees to fit out the shell of a 34 ft. aluminium ex-crayfishing boat for them to maintain and use to service remote coastal communities during the wet season.
I need a copy of an electrical schematic for a vessel of similar size to use as a training tool, we will then design and draw an electrical system for this vessel.

The wiring schematic, if we get one, will only be used as a tool and a guide to help the trainees to understand how to draw a achemactic. any help would be appreciated

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Voltage Drop Calculations

Reading the Marine Electrical and Electronics Bible, I got to the section on calculating voltage drop and was curious if the formula for finding voltage drop in a 12 VDC system is the same for a 24 VDC system. I know three of the values are plugged in (load in amps, cable length and conductor cross section) but does the one constant (0.0164) remain the same for all DC voltages. Also where does the 0.0164 come from in figuring out voltage drop. I couldn't find where it was explained where that value comes from. Any help is greatly appreciated. Thanks.

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Mar 17, 2008
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Resistor value for charger
by: Joseph2

would like to convert from 12.5 volts DC to 9 for my phone chage in my boat equipment operating at volts 9 volts DC at 300 ma would like to use resistors only.

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Negative Grounds

by Jim Charles
(Maine USA)

I recently installed a small fire alarm panel into a fibreglass hulled vessel. I’m kind of new to marine electrics so excuse me if my questions are naive. The problem is that I cant get rid of an "Earth Fault" that keeps showing on the panel. I have tried to get some information from the suppliers however they wont support this panel despite selling it to us!! They suggested the ship may have the wrong type of Earthing System. As I understand it there are two types - floating Earth and negative grounded Earth. I am assuming the negative grounded just attaches the negative wire from equipment to the chassis at an earthing point (prop shaft?), like a car, while the floating Earth is independent of the DC live and neutral. When I asked an electrician about this he told me there was no earth on the boat but I could run a wire to the anode and connect this to the enclosure chassis. I didn’t want to connect the chassis to the negative in case it carried a current so I left it until I found an answer. Given this information can you suggest what type of Earthing system this vessel would have?

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Feb 18, 2008
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Fire Alarm Ground Fault
by: Joel

Jim, I have been working on fire alarms for many years. The "Earth Fault" or Ground Fault light usually indicates a problem with the power limited side of the power supply. That would be a wire in the detection circuit , horn circuit, etc not a problem with the AC power feeding the panel. The wiring in a fire alarm panel is "supervised" for continuity, shorts , and grounds. All of this wiring must be isolated from any other circuits. Do not ground any (-) negative conductors. On occasion you can get a ground fault if you have a have bad or leaking back-up battery. Also..... do not take your DC power from your house batteries. The (-) terminal on these batteries is grounded and will cause a fault on your panel. You must have a separate battery that is completely isolated from the other batteries.

Joel
BoatWiring.org

Aug 28, 2007
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Boat Grounding
by: John Payne

Are we talking about an AC or DC powered fire panel here?. In all probability on any GRP yachts or boats the battery DC negative is grounded to the engine and by default this polarizes the system via propulsion to water via prop shaft etc so this is your ground. This means that you ground the unit as you suggested. I am perplexed about your electrician saying there is no earth, that cannot be true. If you have no grounded system them all circuit breakers would be dual pole, and in GRP boats this is almost unheard of. You must not get AC and DC earths, grounds and neutrals all mixed up and the same goes for bonding of zincs. In any case grounding chassis to this ground will not hurt.


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Blown fuses

by Lynn
(Wichita Falls TxClay)

Boat starts easy. When the switch is turned off, it throws the 20 amp fuse breaker. Mercury 115 4 stroke 2003. ELPT 4 stroke. I have not had the boat running in 3 years since the lakes are low, but we are getting some rain and I want to get to use the boat. Thank You for your information. Model number 1115F13CD

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