If anyone else is looking to do a dual battery like mine, below is a link to where to get a much better solenoid than the one I have and it's cheap. Mine is only rated for 85a continuous and this one is 200 cont, 400 surge. I'm ordering one since I think mine is crapping out from running the winch across it.
Hey Tom you got any pictures of where your second battery. And how did you wire yours in. My intentions are to put a second battery in the bed and ground it within a foot then run like a 0 guage power wire directly to the original battery and maybe beef up the wire coming from the alt that be overkill.