I am not sure there is an easy answer for this but this is weird...
When I turn on the headlights, the oil pressure gage and temperature gage needles go to the extreem reading.
If I look at the gages when the headlights are on, it looks like the engine is over heating and the oil pressure is maxed. When I turn off the headlights, the gages go back to normal.
Must be a wiring short or cross wire somewhere.
Any ideas?
Dennis
I'm no electrical guru, but I would start first looking at the voltage regulator, providing all other electrical is intact. If you have a lot of splicing going on throughout the car that also could be creating an issue, or if you have a wire that rubbed thru somewhere and is arching.
Someone else might know better, but my first thing would be the voltage regulator.
May be a grounding issue. Something like the dash lights not grounded and grounding through the gages.
You are probably both correct. This car has had an alarm and a casette tape deck wired to it in the past. Both of which I have removed.
I am sure that there is either a grounding issue or an issue with a wire rubbing through somewhere.
The voltage regulator I replaced a few months ago but I noticed that the wire harness going into the voltage regulator looks suspect. Is this a standard item that I can order through one of the parts houses? Any idea what it is called?
Thanks for your help guys!
Dennis
I don't know if this is the same as what i experienced but , I had a simailar problem on my 68 gmc truck. I would turn on the lights and all the gauges would go crazy , turn on the turn signal and gauges would all act crazy. Found that the printed board had a short in it./ It's the board that all the dash lights and gauges attach to.
I tryed and tryed to trouble shoot it but when I tore the truck down for a rebuild , i spotted the dash circuit borad burned. Nobody i talked to knew what was going on.
Gook luck