No fogs, tails, ft. parking, instrument cluster, nor license plate
- Thread starter TYSHO
- Start date
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projectSHO89
SHOless In St L
The fuse link is not hidden. It is connected, in plain view, to the starter relay.
Pull Fuse #4 and check for power on one of the two terminals in the fuse panel. If none is found, locate fuse link D (16 GA, BLK) and test it. It is the one that splices to a BLK/ORG wire into the harness. Replace if open.
Steve
Pull Fuse #4 and check for power on one of the two terminals in the fuse panel. If none is found, locate fuse link D (16 GA, BLK) and test it. It is the one that splices to a BLK/ORG wire into the harness. Replace if open.
Steve
RJ-92
Active Member
I had the samwe problem once after a dash pull to swap heater cores. The onlything that worked were my headlights. It happened to be caused by the brown wire pulling out of the piggy-back plug for the headlight switch. I plugged it back in and it was all good from there.
projectSHO89
SHOless In St L
RJ-92 said:
If you look at the 89 EVTM (as I did), you will see that the power for the fog lights is tapped off BEFORE Fuse 4 which is BEFORE the light switch.
Steve
Update...
Fog lights = fog light switch
Rest of lights listed = box relay/switch, or whatever, behind the glove box.
For future searching, the switch/relay is located behind the glove box latch, bewteen both air vents, and a little to the left. There's 4 wiring harnesses going up into the area, with connectors. Starting from the left is the relay/switch I'm talking about, then a black connector, green connector, and grey connector. Forgot to mention, it's behind the latch connecting thing, but yet above. You have to look from underneath, with the glove box fully open, clips pushed in on sides.
This was also causing my #4 fuse to blow everytime the lights where turned on.
What's weird, the car I pulled it off still had function of these lights when the relay/switch was disconnected.
Must be a SHO!!!
Thanks to forum member bmcreider for the parts, I owe ya!
Fog lights = fog light switch
Rest of lights listed = box relay/switch, or whatever, behind the glove box.
For future searching, the switch/relay is located behind the glove box latch, bewteen both air vents, and a little to the left. There's 4 wiring harnesses going up into the area, with connectors. Starting from the left is the relay/switch I'm talking about, then a black connector, green connector, and grey connector. Forgot to mention, it's behind the latch connecting thing, but yet above. You have to look from underneath, with the glove box fully open, clips pushed in on sides.
This was also causing my #4 fuse to blow everytime the lights where turned on.
What's weird, the car I pulled it off still had function of these lights when the relay/switch was disconnected.
Must be a SHO!!!Thanks to forum member bmcreider for the parts, I owe ya!
Update...
Fog lights = fog light switch
Rest of lights listed = box relay/switch, or whatever, behind the glove box.
For future searching, the switch/relay is located behind the glove box latch, bewteen both air vents, and a little to the left. There's 4 wiring harnesses going up into the area, with connectors. Starting from the left is the relay/switch I'm talking about, then a black connector, green connector, and grey connector. Forgot to mention, it's behind the latch connecting thing, but yet above. You have to look from underneath, with the glove box fully open, clips pushed in on sides.
This was also causing my #4 fuse to blow everytime the lights were turned on.
What's weird, the car I pulled it off still had function of these lights when the relay/switch was disconnected. Must be a SHO!!!
Thanks to forum member bmcreider for the parts, I owe ya!
Edit: BTW, I believe this only applies to the '89 SHO, as the wiring is different from 90 and up.
Fog lights = fog light switch
Rest of lights listed = box relay/switch, or whatever, behind the glove box.
For future searching, the switch/relay is located behind the glove box latch, bewteen both air vents, and a little to the left. There's 4 wiring harnesses going up into the area, with connectors. Starting from the left is the relay/switch I'm talking about, then a black connector, green connector, and grey connector. Forgot to mention, it's behind the latch connecting thing, but yet above. You have to look from underneath, with the glove box fully open, clips pushed in on sides.
This was also causing my #4 fuse to blow everytime the lights were turned on.
What's weird, the car I pulled it off still had function of these lights when the relay/switch was disconnected.
Must be a SHO!!!Thanks to forum member bmcreider for the parts, I owe ya!
Edit: BTW, I believe this only applies to the '89 SHO, as the wiring is different from 90 and up.
projectSHO89
SHOless In St L
FYI, that was the autolamp module.
Wish you had told us about the blowing fuse, that would have changed my previous research.
Glad you found and fixed it!
Steve
Wish you had told us about the blowing fuse, that would have changed my previous research.
Glad you found and fixed it!
Steve
projectSHO89 said:
That's why the fuse quit popping when the autolamp was disconnected! But when it was disconnected and the headlight switch was turned on, my lights where still gone until the module was replaced. I do believe one or two of the wires went to the headlight switch, but I'm not for sure.
projectSHO89
SHOless In St L
If that was the component with a 6-wire connctor, it is the Autolamp Dual Relay.
FWIW, your headlights should have worked just find using the switch with the above relay disconnected. That yours didn't likely means you have an open circuit in or around the headlight switch and that your headlight functionality is being provided only by the autolamp feature.
Steve
FWIW, your headlights should have worked just find using the switch with the above relay disconnected. That yours didn't likely means you have an open circuit in or around the headlight switch and that your headlight functionality is being provided only by the autolamp feature.
Steve
My headlights did work, just the parking lights(all lights associated w/parking lights) did not. I'm sure that's what you meant anyway and your reply still applies to this problem.
My headlight switch harness DID have 2 wires tapped in, as part of an alarm which has been pulled out. Maybe if I do follow them, the mains are disconnected and the ones that where tapped in were relying on the alarm box to complete the circuit. This would explain why the car I pulled the module from still had the lights operating.
Thanks for diagnosing this problem further, Steve, I appreciate it!
My headlight switch harness DID have 2 wires tapped in, as part of an alarm which has been pulled out. Maybe if I do follow them, the mains are disconnected and the ones that where tapped in were relying on the alarm box to complete the circuit. This would explain why the car I pulled the module from still had the lights operating.
Thanks for diagnosing this problem further, Steve, I appreciate it!
projectSHO89
SHOless In St L
On the 89 with Autolamp, the exterior lights, including the parking lights, all go through fuse #4. The headlights themselves do not as they are protected by the fusible link.
If Fuse 4 was blown or out of circuit at the time you checked the exterior lights, that would explain why they were out and your switch is okay.
The headlights are served by one set of contacts within the headlight switch. The exterior lights are served by a different set and are not electrically connected to the headlight circuit.
Steve
If Fuse 4 was blown or out of circuit at the time you checked the exterior lights, that would explain why they were out and your switch is okay.
The headlights are served by one set of contacts within the headlight switch. The exterior lights are served by a different set and are not electrically connected to the headlight circuit.
Steve
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