The Minn Kota trolling Motor began to start and stop continuously for about a half hour, then quit working entirely. Since I recently purchased the boat used, I took the two deep cycle batteries out and had them tested, and they tested out as "weak". I thought purchased two new deep cycle batteries, but when I hooked them up, there was no power at all to the trolling motor. I'm now assuming it's a fuse or breaker, but I don't know where to find them. Can anyone help me? Thanks.