This was my first guess looking at it as well. Especially if there is no power on it (really hope not with as shoddy as that is done). I would imagine they may have just tapped into the ignition switch wiring with it. You could easily figure if that is what it was by flipping the switch and seeing if you can still start the truck. If that is in fact what it does, you could either leave that switch in place, splice the wires together right there or remove the ignition switch/start button (not sure which all G1's had) and resplice the wires behind it. If you did want to leave it in place, I would strongly suggest changing to a different switch that you can have crimped on ends that leave no exposed metal.KIll switch ?