what colour wire

[Nev_LCR]

just maounting my boost gauge and need to know what colour wire on the head unit is + and - i take it its the red one and black but just want to make sure as i dont have a metre.

cheers

 

[lard44]

I'm sure if you do a search I've seen people post up a wiring diagram for the standard HU

 

[Icecavern]

Why are you wiring your boost gauge to the HU?

 

[merlin051]

Normally people wire boost guages to the headlight switch, then you can use the Dimmer on teh boost guages aswell as the other backlit lights