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I have a factory installed hitch and wiring. The pin on the car that handles tail lights stopped working. Turn signals and brake lights work. Is there a fuse someplace that controls tail lights on a trailer?
 

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2019 Ascent Limited
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I have a factory installed hitch and wiring. The pin on the car that handles tail lights stopped working. Turn signals and brake lights work. Is there a fuse someplace that controls tail lights on a trailer?
My 2019 Owner's manual shows fuse number 28 in the inside fuse panel labeled as "Trail". I didn't see anything else that looks like a trailer fuse.
 

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My 2019 Owner's manual shows fuse number 28 in the inside fuse panel labeled as "Trail". I didn't see anything else that looks like a trailer fuse.
I can confirm that Fuse #28 controls the FB-5 (Trailer hitch connector system). If wired to a Brake controller, you might want to check the Slow Blow Fuse in the Engine Bay, identified as SBF-4.
 

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I have a factory installed hitch and wiring. The pin on the car that handles tail lights stopped working. Turn signals and brake lights work. Is there a fuse someplace that controls tail lights on a trailer?
We had to replace the trailer control module due to similar issues. You can check for voltage coming into and out of the module pins, which is located under the cargo area on the driver side. Our dealer tested and swapped it out pretty easily. Has worked great since.
 
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