Trailer taillights not working?

50,000 MILES • 3.2L • 6 CYL • 4WD • AUTOMATIC
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RICH SCOTT
  • MEMBER
  • 1 POST
The left rear taillight has power but when i put the bulb in it turns off?
Apr 28, 2023 at 11:51 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,561 POSTS
It sounds like the BCM is going out here are the taillight wiring diagrams so you can see how the system works and I have included how to change out the BCM in the images below. You can get a preprogrammed unit by searching Google or Ebay. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.

Apr 29, 2023 at 6:18 AM
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