Hello,
The ground wire from bumper to frame or body probably got disconnected and this is affecting the other lights. Look for a wire back there disconnected or broken. You will probably see one hanging. Here ias how to check the wiring and the running light wiring diagrams so you can see how the system works:
https://www.2carpros.com/articles/how-to-check-wiring
Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Wednesday, April 14th, 2021 AT 6:39 AM