Trailer Brake Controller Installation in 2003 GMC Safari Van
Question:
I have looked through your website but hasnt found a video specific to my 2003 GMC Safari cargo van for complete installation of a electric brake controller. If there is no video specific to my vehicle, can you direct me to the most relevant one?
asked by: Dwight J
Expert Reply:
The installation of a trailer brake controller like the Prodigy P2 # 90885 in a 2003 GMC Safari van and the parts needed will depend on how it is equipped.
If the van has a factory-installed 7-way trailer connector you may be able to find a pre-installed blue wire (for the controller's output signal to the 7-way) that will be under the dash near the emergency brake pedal. This will connect to the controller's blue wire.
If your truck has a round plug with a cap inside the driver's side frame rail instead of a bundle of wires in the jack storage compartment, use part # 30955.
Vans without the factory 7-way will need a 4-pole wiring harness # 118392 along with brake controller install kit # ETBC7.
Either way the four wires of any brake controller will connect as follows:
RED wire connects to cold side of brake light switch (that carries voltage ONLY when you press the brake pedal).
WHITE wire is ground and is routed to battery negative terminal.
BLACK wire delivers 12V operating power to the controller and connects through a circuit breaker to the battery positive terminal.
BLUE output wire connects to the factory blue wire if present, or to the wire included in the ETBC7 kit.
The linked articles cover the whole process of hardwiring a controller. This will apply to any vehicle; just some of the specifics will vary from one to another.
![Adam R](https://images.etrailer.com/static/images/catg/people/477_tn.jpg)
Products Referenced in This Question
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 4 Flat
- Tekonsha
more information >
Replacement Custom Multi-Tow 7-Way and 4-Way Trailer Connectors
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 4 Flat
- 7 Round - Blade
- Hopkins
more information >
Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Accessories and Parts
- Trailer Brake Controller
- Installation Kits
- etrailer
more information >
Product Page this Question was Asked From
Tekonsha Prodigy P2 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
- LED Display
- Up to 360 Degrees
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Video: etrailer Trailer Brake Controller Universal Kit Review
- Shop: Brake Controller
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Search Results: electronic brake control
- Search Results: ebrake
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Video: Choosing the Right Brake Controller
- Search Results: 44649
- Shop: Trailer Hitch
- Q&A: Wiring a Camper Shell Third Brake Light on a 2017 Chevrolet Silverado
- Video: Choosing the Right Trailer Wiring
- Search Results: 68149
- Shop: Trailer Wiring
- Q&A: 10k Dexter Replacement Hub for a 8-415
- Article: Trailer Wiring Diagrams
- Shop: Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Article: Brake Controller Installation: Starting from Scratch
- Shop: Redarc Tow-Pro Liberty Brake Controller - Dash Knob - 1 to 2 Axles - Proportional
- Search Results: 25580
- Q&A: How Many Transfer Switches are Needed to Switch from Shore Power to a Genreator, and An Inverter?
- Video: etrailer Class III Trailer Hitch Installation - 2016 Jeep Cherokee
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Search Results: dust caps
- Shop: Suspension Enhancement
- Q&A: Replacement LED Top Command Clearance Light With SAE-AP2-16 On Lens For 2018 Sunseeker Motorhome
- Shop: Curt Echo Wireless Brake Controller - 7-Way Plug Mount w/ Bluetooth App - 1 to 2 Axle - Proportional
- Video: Roadmaster Automatic Battery Disconnect Installation - 2020 GMC Sierra 1500
- Search Results: dust cap
- Video: Lippert Solera Slider Slide-Topper Review