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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: Bobbo on July 22, 2006, 01:50:00 pm

Title: Marker Lights Not Working.
Post by: Bobbo on July 22, 2006, 01:50:00 pm

Ok first off I have an 87 GMC 1/2 ton, I put in the euro headlights (4) and they all work great.

Now my marker lights were working, then they became dim, now they dont.

I checked the brown wire running from the side marker and it had like 1 volt to it, I traced it to the headlight switch, still only 1 volt, I took the switch out and checked it on the battery with a hot wire, and the switch itself is good.

I did some testing on the incoming wires for the switch and I have a constant 12 V on the large red, but on this orange wire I am getting about 1 volt???  I dont know much about wiring so i am pretty lost.

Any help is appreciated.  Bob

Title: ?
Post by: VileZambonie on July 23, 2006, 12:19:00 pm

your marker lights aren't working as in your license plate lights? Or are you talking about the parking lights?

Title: Re: ?
Post by: Bobbo on July 23, 2006, 07:12:00 pm

It was all my marker lights/signal lights/ tail lights.  After I pluged everything back in it all worked again, so my problem is likely with corrosion on the main plug in on the firewall.

Thanks, Bob