Okay, still working on deciphering the diagram a bit. In the pic it shows the ground "-" (from MR board) goes to the switch. Does that mean that you connect another ground to the other side?
I'm asking because I want to attempt to wire this switch into an existing set up that has a recharge port in it.
The diagram says "ground from battery source", I am guessing that its stating there is another ground attachment on the other side of the board.