where would you hook the red and the purple wires? Instructions below. I'm
sure someone has done this before, if you know the wires it would make this go smoother for me. Thanks.
Water, Oil, Transmission Temperature
1. Connect red wire from gauge to a switched 12v source (12v switched power source means that there are 12v to the red wire when the ignition switch is on and no voltage when the ignition switch is off)
2. Connect black wire from gauge to a good engine block ground
3. Connect purple wire from gauge to the night time dimming circuit. (The purple wire must be connected to the headlight switch circuit so that there are 12v to the purple wire when the headlight switch is on and no voltage when the headlight switch is off)
4. Connect white wire from gauge to white wire from the temperature sending unit provided
NOTE: Do not use Teflon tape or sealing compound when installing sender. Threads on sender are self sealing and must make good contact with ground!