How to Install a Brake Controller on a 2009 Hummer H3
Published 11/09/2017
Question:
I have a Hummer H3, prewired for trailer brakes, need to add controller. Is it a DIY project? is there any more to it than wiring and mounting? thank you
asked by: Kelly S
Expert Reply:
Absolutely, installing a brake controller on a vehicle such as your 2009 Hummer H3 is an extremely doable task even for the most novice installer. Since the brake controller wires are already pre-run, the task becomes even more simpler.
The wires for the brake controller are already pre-run under your drivers side dash panel. Once the panel is removed, you should see a cluster of 4 wires with blunt ends taped together. The pre-run wires will have the following functions; power, ground, stop, and brake. You will need to test each of these wires for the corresponding functions using a circuit tester like part # ALL640595. Once the wires have been identified all you will need to do is join the wires from under the dash to the brake controller.
For a brake controller that will work well for you, I recommend taking a look at the Tekonsha Prodigy P2 Trailer Brake Controller part # 90885. The Tekonsha P2 is one of the most popular, well reviewed, and easy to use brake controllers on the market. The kit comes with everything you will need to install on your Hummer (i.e. wiring/mounting bracket). I have also attached an installation video of this controller installed on a similar vehicle for reference.
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Brake Controller
- Q&A: Installing a Brake Controller in a 2007 Hummer H3
- Q&A: Replacement Bearing Kit, Spindle Washer, & Nut For 5,200 lb Lippert Trailer Axle
- Video: Set up: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles on a 2006 Hummer H3
- Shop: Base Plate for Tow Bar
- Shop: Vehicle Tow Bar Wiring
- Shop: Demco Classic Base Plate Kit - Fixed Arms
- Shop: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 4-Way Flat Connectors
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: trailer hitch
- Video: How to Choose a Trailer Brake Controller
- Shop: Trailer Hitch
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Shop: Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector
- Search Results: trailer tires and wheels
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Video: Redarc Tow-Pro Liberty Brake Controller Review RED24FR
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Shop: Trailer Wiring
- Article: Trailer Wiring Diagrams
- Q&A: Instructions to Wire a Trailer for Electric Brakes
- Search Results: trailer wiring
- Video: What to Know About the Curt TriFlex NEXT Trailer Brake Controller
- Shop: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord
- Article: How to Measure for Trailer Hitch Drop
- Q&A: My Vehicle has a 4-Pin Trailer Plug, but Trailer has 7-Pin Trailer Plug
- Search Results: trailer jack
- Video: Feature Breakdown: Universal Installation Kit for Trailer Brake Controller
- Shop: Suspension Enhancement
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
on Trailer Brake Controller
