2017 Armada lights issue

[b1scoff]

After replacing the rear hatch and bumper cover, the brake lights, turn signals and headlights work fine, but the tail lights and daytime running lights arent coming on. We suspect a blown fuse or a relay issue but can't locate the correct fuse. Any advice??

 

[f.n8ty]

I think you're on the right track suspecting a fuse or relay.
For the tail lights and DRLs specifically, I'd first double-check the fuse box in the engine compartment.
Sometimes there's a separate fuse just for these.
Also look closely at the harnesses connected to the new hatch and bumper.
It's possible a wire got pinched or a connection isn't quite seated.
If the fuses are good, then a relay would be the next logical step.

 

[Clyde1]

If your tail lights ghosted after a bumper swap and you're still hunting fuses blindly, you're basically troubleshooting in the dark, check your wiring harness first. A pinched or unseated ground will make relays pointless