Troubleshooting a Plug in Wiring Harness for a 2024 Ford Bronco Sport
Updated 02/20/2025 | Published 02/15/2025
Question:
All trailer lights work correctly until I crank the truck then brake and turn signals quit but running lights stay on. Could that be a bad ground on the truck? 2024 bronco sport big bend with plug and play wiring system.
asked by: Stanley B
Expert Reply:
That sounds about right Stanley. It's either a bad ground or a bad control module. Both harnesses we have for your Bronco Sport item # TK46FR and item # C47WR require you to ground the harness out to a bare clean piece of metal with no paint or corrosion. I recommend checking to see if it's come lose or is dirty.
Product Page this Question was Asked From
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- Powered Converter
- No Tow Package
- 4 Flat
- Plug and Lead
- Plug-In
- Visible
- CURT
more information >
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Stanley B.
2/19/2025
I have tried checking the ground and even ran a ground wire from the battery . Have purchased another curt wiring harness still does the same thing. The tail lights on the bronco ar incandescent and the trailer lights are led will that have anything to do with it. I am at my wits end.