headlights quit working::mad
Thread Starter
Race Director
Joined: Aug 2002
Posts: 17,367
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From: Kentucky
headlights quit working::mad
:mad :mad My headlights won't come on. I don't know if these two things are related, but here's what happened. Awhile back my left headlight motor wouldn't go down. Swapped the relay and it still wouldn't go down. Right one worked fine. Since we were getting so much snow and ice I just decided to leave them both up for a couple of weeks. I go to drive tonight and turn the headlights on and nothing, zip, nada. My driving lights work, but no headlights. I need help.
[Modified by hngacurv, 12:47 AM 3/8/2003]
[Modified by hngacurv, 12:47 AM 3/8/2003]
Burning Brakes
Joined: May 1999
Posts: 1,179
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From: waller texas
Cruise-In I Veteran
Re: headlights quit working::mad (hngacurv)
check and see if you have power at wires to headlights.if not then check headlight relay.if no power at headlight relay then check power at headlight switch.also check power at headlight motors.there should be power on one wire when on and power on other wire when lights are off.sounds to me like you either lost a ground connection or the headlight switch is bad.
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
Re: headlights quit working::mad (hngacurv)
What year vette? Are the headlights on, but the doors remain closed? Do the door relays have 12v on the red wire? If not, the fusible link to them is blown. Does the yellow wire on the door relay have 12v on them with the headlight switch on? If not, either the headlight switch, its circuit breaker, or another fusible link is blown. Does the black wire on the door relays measure low resistance (less than 1 ohm) to ground? Unplug the door motors and jump 12 v to the green wire and each other wire and try reversing polarity on these wires. One connection should make the door open (positive to green wire , neg to white wire). If the door won't open with 12v jumped, you need to work on the door motors.
Thread Starter
Race Director
Joined: Aug 2002
Posts: 17,367
Likes: 1
From: Kentucky
Re: headlights quit working::mad (jfb)
I have an 86 and the lights are not working at all and only one motor is getting power. I just bought a test light and went to take off the relay that goes to both headlamps on the fenderwell and the wiring harness itself just fell apart. Now I have to fix wiring harness just to use the relay. Has anyone just said to hell with all these relays and just wired 2 toggle switches to the motors and lights(1 for each)? I'm thinking of doing this.
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
Re: headlights quit working::mad (hngacurv)
Cool down. You have just found your problem, the wiring harness is falling apart and the correct thing to do is to replace the defective harness or repair it by removing the shoddy wiring and splicing new wires and connectors. You keep repairing your car like you want to and you will have 49 toggle switches swinging back and forth under your dash and a junkmobile. Fix it correctly and you will have a C4 that works just like its supposed to and looks good.
Thread Starter
Race Director
Joined: Aug 2002
Posts: 17,367
Likes: 1
From: Kentucky
Re: headlights quit working::mad (jfb)
I plan on waiting til tomorrow and then I'm going to replace the harnesses. I'm going to try and fix it the right way 1st. The toggle switches are a last resort kinda thing.
