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Solution for Bulb Out Error Code Towing Trailer with 2024 Ford Bronco Sport  

Published 10/23/2025

Question:

Im trying to connect LED trailer lights to my 2024 Bronco Sport 4 way flat pin. The lights work fine, but I constantly get an annoying message Trailer Park Lamps Fault Check Lamps message when the headlight are on and I use the brakes. I am told by Ford that the LEDs resistance is too low and that I need higher resistance lights incandescent. Any suggestions?

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Expert Reply:

Hey Mike, this is a pretty common issue with newer vehicles and LED trailer taillights unfortunately but there are ways to fix it. You can swap the trailer lights to incandescent like you mentioned or you can add load resistors like the part # ARC22VR on the trailer's wiring for the running light circuit and that will simulate the load.

expert reply by:
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Jameson C
Mike profile picture

Mike

10/23/2025

Thanks for the quick reply! So I would need to install 2 resistors (one for each side)?

Jameson C. profile picture
Etrailer Expert

Jameson C.

10/23/2025

@Mike You'd only need one on the problem circuit which it sounds like is the running light circuit based on the dash message.

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