The starboard engine starter and related electrical circuits of my 1996 open bow Searay with 5.7 Mercruiser engines, has no power. The port side has power. I am not even getting an alarm when I turn the ignition switch on the starboard engine and no gauges are active on the starboard side. I replaced the starboard battery. The power switch does not provide power to the starboard side even when I put it in the "both" position. Is the switch bad or should I be looking elsewhere?