Ok guys i have a 1984 Galexy Center Console T-top. The boat is equipt with 2 batterys and a battery switch thats 1,2, all off. I was looking to connect another battery for the lights inside the boat the radio & amp. I was looking to get that Solar Battery charger that goes on top of the T=Top. Does anyone recommend this Model It's Seachoice Solar Charge Maintainer 300MA. Well pretty much my question is do they sell a switch for 3 batterys? Can you wire that to 1 motor? If so how would you wire that????