My MSD window switch came in yesterday but no instructions were included. I am using a ZEX nitrous kit on my car and I have been told to wire it up using the white wire going to the TPS sensor and not the ground wire. Other than that I have no clue on how to wire this thing up. Does anyone have a wiring diagram or anything? Do I need to use a constant hot? Which wire will I tap into for the rpm signal?
