Haunted gauges!?

[kwhopper]

Ok, before I start tearing the wiring out, maybe some of you learned individuals here can help me out....my oil pres. and volt meter both fluctuate when the lights are on....what I mean by fluctuate is that they will change the reading as I dim the dash lights. Dim the lights and they both go to zero, turn them up and both gauges peg....grrrr!, work normally when the lights are off. Just a side note the po went a little crazy with wiring behind the dash, he probably has something crossed (besides his eyes).

Thanks for any and all help!

 

[CJ]

Sounds like the PO has tied the gauge 12v input into the dimmer rheostat output...

 

[jasonmark1993]

I agree.

Make sure the gauges had 12V with the key on and a good ground. The only other wire is the sender wire.

Lighting is separate.

 

[mtnwhlr]