88 Headlight Problem (Not Bushings)
Thread Starter
Advanced
Joined: Jan 2005
Posts: 71
Likes: 11
88 Headlight Problem (Not Bushings)
Hello,
I can't get the headlights to go up on my 88. I just replaced the bushings, and the headlights move fine using the manual ****, but they won't go up with the motors.
To eliminate the relay as a problem, I probed the wires going directly to the motors. Both wires were hot at both motors. Is it normal to have BOTH wires be hot? Where does the motor get its ground?
Any help is greatly appreciated.
Thanks in advance for the help.
Best Regards,
Jim Lamb
I can't get the headlights to go up on my 88. I just replaced the bushings, and the headlights move fine using the manual ****, but they won't go up with the motors.
To eliminate the relay as a problem, I probed the wires going directly to the motors. Both wires were hot at both motors. Is it normal to have BOTH wires be hot? Where does the motor get its ground?
Any help is greatly appreciated.
Thanks in advance for the help.
Best Regards,
Jim Lamb
Drifting
Joined: Sep 2003
Posts: 1,363
Likes: 7
From: 1994 LT1 Coupe 6-speed with FX3 & 2000 LS1 Vert 6-Speed with F45 Hunterdon County, NJ
both wires being hot does NOT make sense at the same time (presume using a volt meter -and not a test light -- you had 12+ vDC when connecting 1st wire->red test lead and frame ground->black test lead --and then-- 2nd wire->red test lead and frame ground->black test lead).
Further, the relay should only be for the positive (+) side.
Maybe the headlight control module is either mis-wired or has failed.
Further, the relay should only be for the positive (+) side.
Maybe the headlight control module is either mis-wired or has failed.
Thread Starter
Advanced
Joined: Jan 2005
Posts: 71
Likes: 11
Thanks for the input. I did test it with a volt meter. The black wire was grounded and the red wire was a positive hot reading (+12VDC) on BOTH leads for BOTH headlight motors.
The headlight control module has never been messed with since the headlights last worked, so I know it is not miswired. Is there any test I can do to determine for sure that the control module is bad?
Is there any way to manually test the headlight motors? Maybe hooking them directly to a 12V jumper running to the battery?
Again, any help is GREATLY appreciated.
Thanks.
Jim
The headlight control module has never been messed with since the headlights last worked, so I know it is not miswired. Is there any test I can do to determine for sure that the control module is bad?
Is there any way to manually test the headlight motors? Maybe hooking them directly to a 12V jumper running to the battery?
Again, any help is GREATLY appreciated.
Thanks.
Jim
Melting Slicks
Joined: Jul 2003
Posts: 2,384
Likes: 124
From: Reno/Sparks Nevada
I believe you can simply jumper the motor with battery and ground to the motor. This will confirm that the motor rotates. Reversing the polarity will cause the motor to turn the other way. Give it a try, since you need to isolate the headlight motor anyway.
Art
Art
