81 720 brake light issue

[jodaddy]

Hit the brakes and the right turn signal indicator comes on along with the dash lights. Turn the lights on and the right side tail lights go out when I hit the brake pedal. front right turn signal blinks the marker socket. turn the lights on and there is no right turn signal. I know it sounds confusing because it is! Please help. thanks, Joe

[datzenmike]

Just a guess... check the front right signal bulb and the rear 2 filament bulb for brake and running light on the right side. The filament has broken and the loose end has flopped around and welded itself to the other filament. I think.

Edited May 3, 2009 by datzenmike

[jodaddy]

I wish it was that. all new bulbs.

[yello620]

Any chance that a dual filament bulb was installed where it should have been a single filament. This will cause weird feedback in the systems too.

[moparvwfreak]

check your grounds!!!!!!! i know that i had something similar happen to a VW and the ground for that light was bad.

[LCDC]

check your fuses and make sure there isn't a wrench fused to the wiring harness

[jodaddy]

where are the grounds attached? Each bulb has a ground wire and they all tie together and go back into the harness. What is the best way to clean out the sockets? I tried to scrape them with a jeweler's flathead but that didn't work too well. thanks for all your replies, Joe

[datzenmike]

Although there is a ground return wire on the rear harness, there is also a small black wire in the general area of the license plate that is bolted to the underside of the box between the bumper and the spare.

[yello620]

the ground for the headlights and front signals is on the core support near the battery.

[jodaddy]

You mean the ground under the battery where the washer fluid leaks. Have to move that one over a little. Thanks guys I have been slowly making progress. A few more clean grounds and connections and 1 new bulb holder and I just might be in business. Joe