Good morning, I am in th eprocess of getting my dad's boat back on the water with many issue to tackle...one being tha tthe trolling motor battery (deep cell) shows fully charged but when i test the wires in the front of boat i get nothing. I have 2 thick wires coming out for the trolling motor...one red, one black...got it...i do understand alittle about the flow of current. the trolling motor also has 2 wires...much the same. It seems to simple to just hook these together and it work...am i over think this over should there be another switch/wire? thanks....the trolling motor is an older motorguide 12V foot controlled...not sure of the lbs.