quick question. I am trying to fix my gauge illumination problem. I am putting in oil pressure, oil temperature, and water temp gauges. I want the light for the gauges to come on only when I turn my lights on. Right now the light on my boost gauge comes on when the car is turned on. That is how the previous onwer had it set up. He obviously just hooked up the light positive to a switch hot. Can you tell me where a good wire is that only gets power when you turn the lights on? I want to put my new gauges in right as well as fix the other gauge. your inputs are much appreciated. Peace.

Quid

 

The wire you are looking for is the +illumination wire. Either behind the radio: red/black in the second gens or blue/white in the first gen. Or at the light switch: red/black 2G or red/green 1G.

I used an 89 and 85 respectively as the examples... might be different in yours. Make sure you fuse the wire.