Troubleshooting Trailer Taillights that Don't Function When Headlights are On
Question:
Good day. I have a 2022 GMC Sierra 1500 AT4X. Vin no: 3GTUU9EL6NG541392. My trailer brake and indicator lights work until I turn the vehicle lights on. Do you have a product that can solve my problem? Let me know if you require more info. Thanks
asked by: Racois U
Expert Reply:
This is a pretty common problem and the issue is that your trailer wiring has an insufficient ground currently which is preventing the lights from being able to draw enough to function when the headlights are on. So what you need to do is first try cleaning the pins of your trailer wiring connector as that will most likely fix the problem or if not you can run wire back from the grounds of the assemblies up to the main ground harness of the trailer.
Product Page this Question was Asked From
Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug
- Custom Fit Vehicle Wiring
- Fifth Wheel and Gooseneck Wiring
- 10 Feet Long
- Custom Fit
- 7 Round - Blade
- Hopkins
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