Finding Power Wire for Third Brake Light in 2011 GMC Sierra 1500
Published 04/12/2019
Question:
Hi, Im unable to locate the light blue wire needed to power the brake light. I have a 2011 GMC 1500/w trailer pkg I thought it would be somewhere in the 7 way harness. Is it further back, or coming from another location? Thanks
asked by: James G
Expert Reply:
There is a dedicated brake light only wire located up under the dash and to the left of the steering column. It is with a wire bundle held together with a white tag. There should be an orange wire that is the center high mount stop lamp wire (CHMSL) that you could use.
You would need to attach wire to the end of it, route it through the firewall, under the truck, and over to where it needs to go.
It is also possible that the truck has a wire under the bed somewhere for this purpose. A place that sells and installs camper shells might be able to tell you where the wire might be.
Product Page this Question was Asked From
Pollak Replacement 7-Pole, RV-Style Trailer Connector Socket - Vehicle End
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- 7 Blade
- Plug Only
- Pollak
more information >
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