Hi guys I'm sorry to ask such a boring question. I'm hooking up a methanol kit and the failsafe flow gauge has a wire that would like to be connected to an instrument dimmer.

I have googled and site searched with no joy.

I presume there is a link between the headlight switch and the instrument cluster as well as the stereo but just can't get which one it is!

TIA


Raz

 

the illumination wire behind the radio is red/black