Location of Factory Wiring Harness to Install a Trailer Brake Controller on a 2008 Chevy Silverado
Question:
is there a plug and play addapter for the 2008 HD 2500 or do i have to splice the wires for this? thanks
asked by: Scott
Expert Reply:
GM has stopped supplying a port for a brake controller several years ago, so you will need to splice the wires from the brake controller. The good news is that the wires are already run and are present under the dash, above the brake pedal. The wires will be bundled together, possible tied to another harness. If you pull them out, you should also notice a tag that indicates the function of each wire.
On the brake controller, the white wire is ground, the black wire is 12 volt power, the blue wire is brake controller output, and the red wire is for the brake signal. I have included a link to an FAQ article on installing a brake controller on your truck. After connecting the brake controller to the factory wiring and mounting the controller according to the instructions linked for reference, you may need to make some additional connections under the hood. For these connections, take a look at the Finalizing Connections for the Brake Controller section in the FAQ.
Product Page this Question was Asked From
Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LCD Display
- Up to 360 Degrees
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Brake Controller
- Shop: Suspension Enhancement
- Article: Brake Controller Installation for 2007 (New Body Style) - 2013 GMC Sierra and Chevy Silverado
- Shop: Transmission Cooler
- Shop: Air Lift Load Controller Compressor System for Air Helper Springs- Heavy Duty - Dual Path
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Shop: Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Shop: Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers - Rear Axle
- Article: Troubleshooting Brake Controller Installations
- Shop: Curt Assure Trailer Brake Controller with Adjustable Screen - 1 to 4 Axles - Proportional
- Q&A: Parts Needed to Install Curt C49UR Assure Brake Controller on 2021 Chevy Silverado
- Q&A: No Power to 12 Volt Pin on a 2011 Chevy Silverado 7-Way Trailer Connector
- Video: Air Lift Air Helper Springs WirelessAIR Compressor Installation - 2020 GMC Sierra 3500
- Video: Air Lift WirelessONE Compressor System Review
- Shop: Air Lift WirelessONE Compressor System for Air Helper Springs - Remote - Bluetooth - Single Path
- Shop: Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - GM
- Shop: Curt Spectrum Trailer Brake Controller - Dash Mounted Knob - 1 to 4 Axles - Proportional
- Q&A: Installing a Trailer Brake Controller on a 2008 GMC Sierra 1500
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: air bags
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Video: Choosing the Right Brake Controller
- Shop: Trailer Hitch
- Shop: Trailer Wiring
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Article: Trailer Wiring Diagrams
- Search Results: trailer brake controller
- Search Results: brake controller
- Q&A: Choosing Between Air Lift Load Lifter 5000 or 7500 For 2018 Ram 2500 Towing 5th Wheel
- Article: Brake Controller Installation: Starting from Scratch
on Trailer Brake Controller
