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Troubleshooting Running Lights Not Working After Trailer Wiring Install  

Updated 08/26/2024 | Published 08/21/2024

Question:

Hello, I ordered Curt C56298 trailer light harness kit for my 2017 Lincoln MKX. The install went smoothly. My only problem now is that once I plugged my trailer in, the brake lights and turn signals work, but the running lights do not. Any advice? Thanks!

0

Expert Reply:

Hey Caleb, normally when this happens is just that a pin isn't seating fully. Try unplugging the connectors and plugging them back in and you should see all of the functions work.

expert reply by:
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Jameson C
Caleb O. profile picture

Caleb O.

8/26/2024

Unfortunately that's not it. Doesn't seem to be a fuse either.

Jameson C. profile picture
Etrailer Expert

Jameson C.

8/26/2024

@CalebO Do you have a circuit tester that could test the running light input circuit on the converter box like the part # PTW2993? If you can verify running light circuit is going into the box but not coming out the converter box is at fault and it would need to replaced.

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