Quote Originally Posted by BSeybold View Post
it has always been my understanding that you should never use an aluminum boat hull as a ground. Electrolysis will result. All electronics, lights, pumps, etc. should be grounded to the battery. The motor should be isolated via built in motor mounts. Not an expert, just my 2-cents worth
I agree, never use hull as 12Volt Ground. My response was geared toward what might happen if the hull is at the same electrical potential as the ground, certainly not as a dedicated primary path for current to flow from +12 Volt source. always wire directly to battery.