The switch is a bit confusing at first. I wire mine to make a constant loop.ie through the battery to the micro switch to the ignition to the on off switch and back to the battery. Only use 2 wires from the switch find the in- out or 1 red 1 black remove the rest. solder in a male to connect in the battery and a female to connect in the ignition. Add if you need to, a charge lead for the battery. Use a good silver solder. I use servo extension wires and ends and cut everything to fit each application.