Ok..I am confused!!!! I am trying to wire my two 6V batteries in a series and can't seem to figure it out. I look at diagrams online and it shows jumping the two batteries together from pos to neg then the pos from the coach to a pos terminal and the neg from the generator to the neg. Then I have a white cable coming from the coach that I don't know what to do with. Thinking it was simply a ground, I hooked it to one of the batteries and when I flipped the switch the lights were dim. So I plugged the coach in to charge them and things started to sizzle and smell so I quickly unplugged everything!! So what did I do wrong? All the wiring diagrams I look at for this procedure only show using three cable..neg, pos and a jumper between the two. What the heck do I do with the white one coming from the coach???? When we took delivery there was only one 12V battery and all the cables were attached to it so I am thoroughly confused.