19stang88

Hi eveybody.

I have searched online on how to fix my headlights and no luck. I am hoping go get help here.

I have a 1988 GT. In the past my headlights would have issues and randomly flicker. I replaced the headlight bulb with a bulb with less output watts and that solved the issue. Over time, my lights started to flicker again with just the low beams and eventually shut off. High did not work. I would have to hold the multi function switch on the flash to pass position to maintain the lights while driving at night. Eventually my lights would not even turn on, not even with the multi function switch. So I thought I burnt the headlight and multi function switch and replaced them both. Still my lights will not turn on to include my running lights. Also my left blinker doesn't work but my right one does. I have done the obvious like check the bulbs and fuses, everything is good. I would like to drive my car at night again. Any help is appreciated.

Thank you

dawson1112

My guess is that the main plug in the dash is burnt. Its common problem on foxbodys

19stang88

Is this the plug you're talking about?

dawson1112

That's the one

mjr46

if the car has fog lights, sounds like they may be the root cause to all the probs, common they burnt up connectors an fuse box inside the car

19stang88

I'll order it. I checked it out and it's not burnt. I have acess to a multimeter. Where do I test?

19stang88

I just tested a few areas. Im getting 12vdc at the multifunction switch from both red and black wires for low beam and green black for flash to pass. When i connect the multimeter at the headlight bulb connection i am drawing nothing, keep in mind the headlight switch is completely on. Is there something that i am missing. I am suspecting a open somewhere..

19stang88

I forgot to add, the front parking lights do not turn and and only my passenger side blinker works.

19stang88

Hope's this helps if anybody comes across it. This ended up being a grounding issues. Also, i found a connector that wasn't fully seated, I can't remember which one, i just remember it was in the engine bay. basically, start out by checking out all your connections and grounds.