Bill.....the pink wire goes to the + side of coil along with your 10 ga. ignition wire to your key switch. The brown wire goes to the - on the coil. You need to change your coil and plug wires also the wire that goes to the key swich (10 ga.) and take off the ballast resistor on the fire wall also spark plugs are a diffrent type. If you shoot Mr. Langdon an email with any questions he will always answer. T/C Steve