Headlight Gremlin

[67GTX440]

My low and high beams worked fine and now they are not. When I turn on the headlight switch, the headlights do not come on. When I hit the high beam button, all four light come on? Any suggestions on where to start looking? Dash light switch is fairly new and it seems it is providing power. Not sure what would cause power to all four on high beam and nothing on low beam. Sound like it may be the in the dimmer switch itself?

Thanks!

Don

 

[nothingbutdarts]

Dimmer switch is where I would start.

 

[satellite66]

Mine's the opposite, my lights come on but when I hit the dimmer switch to turn on the highbeams, the lights go out. I'm assuming it's the dimmer switch. I have a new one to install which I'm going to do this weekend.

 

[2059]

switch is obvious start. also check grounding when replacing...

 

[Dennis H]

Mine's the opposite, my lights come on but when I hit the dimmer switch to turn on the highbeams, the lights go out. I'm assuming it's the dimmer switch. I have a new one to install which I'm going to do this weekend.

Same here on the problem. Keep us posted.

 

[satellite66]

Well it wasn't the dimmer switch. I put in a new one and still get the same problem, the lights go out when the switch is activated. I looked at the fuse box but I didn't see a fuse slot marked "headlights". There was one for the taillights though. So...hmm, not sure what to check next.

 

[Propwash]

Well.....There really isn't a whole lot of wiring running out for the headlights, so there's really not a million things to check. You have two wires in the forward harness coming out of your bulkhead connector (a red and a black) for your headlights. They run to the left side low beam headlight and jump to the rest from there. You'll also have a ground wire coming from the harness up front and usually attaches to the radiator support with a sheetmetal screw. 1st off, check that ground. After that, check the signal coming to the headlights in those two wires by using a hot wire tester in the terminal of the headlamp harness plug. (Black wire low beams, Red Wire High beams------Red is also jumped from the low to high so all 4 are on when brights are selected)

Inside the cabin, there is a light green wire that runs from the headlight switch to the foot selector on the floor. Check that wire to see if there is power to it when you turn the switch to headlights on. The black and red wire running along side the green one to the foot switch are the same two wires that run through the bulkhead connector to your left side low beam.

Checking those things should troubleshoot if it is either the wiring, ground, foot switch or issue stemming from the headlight switch or power to it.

Good luck.

 

[satellite66]

I should have noted that my car is a 66 and has only two headlights. Anyway, I will check the ground wire and the wire from the dash switch.

 

[cr8crshr]

I upgraded to electrical relays on my 66 Satellite. Go to MAD electric dot com for a look see...

 

[Propwash]

I should have noted that my car is a 66 and has only two headlights. Anyway, I will check the ground wire and the wire from the dash switch.

I was writing a response to the original poster, sorry.......Your car is the same minus the two extra headlights. Same colored wires, just the black and red wires running from the bulkhead obviously only run to your single headlights. Good luck.

'66:

http://www.mymopar.com/downloads/1966/66BelvedereSatelliteA.JPG

http://www.mymopar.com/downloads/1966/66BelvedereSatelliteB.JPG


'67:

http://www.mymopar.com/downloads/1967/67BelvedereA.JPG

http://www.mymopar.com/downloads/1967/67BelvedereB.JPG

 

[rebootej]

If its not the switch. Id check around where ammeter wires run through the fire wall and up under the dash. Had my headlights go out found the 40+ year old wiring had melted and fused its self together.



Hope its not that cause your high beams still work, but if you havent id recommend changing them out as preventative.