Hardwired Brake Controller Installation in 2001 GMC SIerra 1500
Question:
I have a 2001 GMC Sierra 1500. Im installing a brake controller by using the hardwire option.it has 4 wires. one wire goes to the positive battery post. One wire goes to the negative battery post. one wire goes to the back of the truck and connects to the blue wire on the 7 Way plug that was capped off. The last wire needs to go to the cold side of the brake switch. my brake switch has 6 wires going to it. The wires are white, orange, purple, brown, green, and blue. Do you have any idea what the cold side wire is.
asked by: Craig
Expert Reply:
You will need to test each of those six wires at the brake light switch, with a tester like # PTW2993, to find the one wire that goes hot ONLY when the brake pedal is pressed and not at any other time or with any other vehicle function activated. This wire delivers the brake signal that tells the controller to generate output and it connects to the controller's red input wire. On your truck this is likely to be a white wire.
We show that there should be a brake controller connection port on your truck, located under the dash, as shown in the linked video for a 2002 Silverado. If you have a port on your truck, you can use harness # 3025-P rather than hardwire.
![Adam R](https://images.etrailer.com/static/images/catg/people/477_tn.jpg)
Products Referenced in This Question
Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - GM
- Accessories and Parts
- Trailer Brake Controller
- Wiring Adapter
- Plugs into Brake Controller
- Vehicle Specific
- Tekonsha
more information >
Product Page this Question was Asked From
Tekonsha Voyager Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Manual Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- Indicator Lights
- Up to 90 Degrees
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Brake Controller Installation: Starting from Scratch
- Article: Trailer Wiring Diagrams
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Article: Installing an Electric Brake Controller on 2007-2013 GM Full-Size Truck or 2007-Present GM SUV
- Q&A: Replacement Hub for Hammer Blow Hub Part HB732 on Old Trailer
- Q&A: Recommended Replacement for Atwood OD5001CW Direct Water Heater
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: 5 Things to Know About Weight Distribution Hitches
- Q&A: How Do I Add a 7-Way Connector to a 2023 Subaru Ascent?
- Q&A: Most Concealed Hitch for a 2023 Subaru Ascent
- Q&A: Replacement Motor For Power Gear Part 1510000006 On 2006 Fleetwood Fista
- Q&A: Replacement Water Heater for Atwood GC10A-3E
- Q&A: Replacement Thermostat for Dometic 3316410.012 Thermostat