where is the headlight relay for the drivers side 87 firebird

 

Your car doesn't have relays, headlight motor functions are controlled by a computer module located near the firewall.

Matt

 

then what would couse just the drivers side light to not work the motor doesnt work at all

 

The motor itself may be bad. The module can break/malfunction in a way that only one side works. Check to see if the motor itself is shot. If can hear it running when the lights are on then its stripped out.

 

so where is this computer and how do i check it thanks

 

It should be near the brake booster, near the fuel pump relay, MAF relays, by the driver side firewall. I'm not sure how to check it. I hear it seems to go bad easily though. I have a '85 with the relay stlye so I don't hve to deal with it. Best way is to make sure the motors are good and the wiring is good. Check the fusible links. Make sure there is power at the red wires at all times (+12 volts)

Hope this helps,

Matt

 

so if i am not going computer controlled then the headlight motors wont raise? well my lights come on but they wont raise? whats up?

 

'82-'86 models used a relay system.
The headlight motors on the '87-'92 models used a control module to control the motors. Without the module working properly the motors won't work. The '87-'92 motors are also prone to breaking down themselves. The nylon gearing or the bushings will break and the motor will cease to operate. All you'll get is the motor making a wining noise as it trys to move the headlight up or down.

 

well i dont have a noise when i turn the switch on and they both worked when I started tearing into the car.
wheres this module and how will i be able to check it?

 

It should be near the brake booster, near the fuel pump relay, on the driver side firewall. I'm not sure how to check it. I hear it seems to go bad easily though. I have a '85 with the relay style so I don't hve to deal with it. Best way is to make sure the motors are good and the wiring is good. Check the fusible links. Make sure there is power at the red wires at all times (+12 volts)

Hope this helps,

Matt

 

The headlight door contol module has two fuseable links inside on the control board. I had one blown a couple of years ago and the passenger light door stopped working. I repaired that and just the other day the drivers side stopped working and the other fusable link had blown. I found a used control module on E-Bay and that fixed the problem.

 

perhaps a wiring diagram would help:

http://www.p71interceptor.com/thirdg...lampdoor87.jpg