Originally Posted by How2

Hi WJChris...
In regards to the batteries.. if you are wanting to add another 12volts to make 36volts, you will need to modify the existing wiring in the battery case.. and not the control box. I suppose you could ditch the battery case altogether, and rewire the whole thing (all 3 12v batts) to the connections in the control box, but so far, I have only seen others rewire to the loop screws located under the grey plug in terminals at the bottom of the battery rack. I've seen folks talk about wiring their batts to the control box, but have yet to see anyone actually make their battery connections there. The control box is pretty crowded. Check out some of the links I posted above for pictures and details. (I took some pics because I finally got my camera fixed, but now the download cable is missing... grrrrr... gotta find that!)