R50/53 Headlight problem. High beam works but low beam doesn't
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1st Gear
Joined: Sep 2007
Posts: 49
Likes: 2
Headlight problem. High beam works but low beam doesn't
Already changed bulbs and inspected wires. Every thing looks fine. Does anyone know if this could be a problem with the wiring harness itself? And how difficult is it to replace it?
Also bought a brand new headlight assembly and still the same issue.
Also bought a brand new headlight assembly and still the same issue.
Last edited by john411; Feb 16, 2026 at 05:22 AM.
6th Gear
Joined: Jun 2014
Posts: 2,249
Likes: 269
From: Dover, PA
I'm not positive but it may be a BCM issue, maybe as simple as pins and connectors corrosion or ... maybe it is as simple as a rodent got in there and nibbled on some wiring. Electrical Systems Troubleshooting, the bane of my existence.
You should get a wiring diagram and check the wire continuity from the light connector all the way back to termination.
An easy fix would be to run jumpers from the side that works to the side that doesn't.
What ever you do, best of luck.
Motor On!
You should get a wiring diagram and check the wire continuity from the light connector all the way back to termination.
An easy fix would be to run jumpers from the side that works to the side that doesn't.
What ever you do, best of luck.
Motor On!
Thread Starter
|
1st Gear
Joined: Sep 2007
Posts: 49
Likes: 2
I'm not positive but it may be a BCM issue, maybe as simple as pins and connectors corrosion or ... maybe it is as simple as a rodent got in there and nibbled on some wiring. Electrical Systems Troubleshooting, the bane of my existence.
You should get a wiring diagram and check the wire continuity from the light connector all the way back to termination.
An easy fix would be to run jumpers from the side that works to the side that doesn't.
What ever you do, best of luck.
Motor On!
You should get a wiring diagram and check the wire continuity from the light connector all the way back to termination.
An easy fix would be to run jumpers from the side that works to the side that doesn't.
What ever you do, best of luck.
Motor On!
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