put on a new (used) bow mount trolling motor - i helped take it off the old boat so I know the motor is good -problem is it blows the fuse. Thisis a new to me boat - a 96 ranger cherokee stick steer- my first question is the plug ranger has on it has two batteries to the plug - both the new and old motors are only 12 volt, so is the plug going to pull from 1 battery at a time? or am i getting too much juice to the battery? I thought with 2 batteries one would be for electronics, but when we put the new motor in found that both batteries are to the trolling motor plug only???