Dorkman is the guy who did the custom guage setup in his truck, he must know. Shoot him a PM.
If you try this let me know if it works, I just hooked mine into the parking lights so they don't dim with the other gauge lights, does not bother me but would be nice if they did.ajackm said:Use the Green, and Green w/white stripe wires that connect to the harness plugged in directly behind the Temp control knob. I believe you need to use both so that your gauges can dim with the rest of the lights.