Can 12 Volt Accessory Circuit be Activated on 2009 GMC Envoy 7-Way
Question:
My 2009 GMC Envoy factory installed 7-way trailer wiring socket does not have a black wire. My understanding is that the black wire is a 12V power wire to maintain RV trailer battery level while connected and pulling the trailer. Could you please verify. Thanks
asked by: Danny K
Expert Reply:
The pin in the 1:00 position of a 7-way is the 12 volt accessory circuit which is what is used to charge trailer batteries typically when charging. Not all vehicle have this circuit active but it's pretty easy to accomplish this. What you'll need to do is use 10 gauge wire like part # 10-1-1 (sold by the foot) to go from that pin through a breaker like # 9510 to the positive pin of your vehicle battery and this circuit will be complete.
Products Referenced in This Question
40 Amp In-Line Circuit Breaker - Perpendicular Mount Bracket
- Accessories and Parts
- Wiring
- Circuit Breaker
- 40 Amp
- Pollak
more information >
Product Page this Question was Asked From
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Converter
- Custom Fit
- 4 Flat
- Tekonsha
more information >
Featured Help Information
Instructions
Continue Researching
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Trailer Wiring Diagrams
- Article: Brake Controller Installation: Starting from Scratch
- Article: How to Measure for Trailer Hitch Drop
- Article: How to Choose the Right Trailer Hitch Class
- Q&A: How Much Can a 2014 Toyota Tacoma Tow with the Bumper
- Q&A: Determine Between Factory 4-Way and 7-Way Trailer Connectors
- Q&A: Adding a 7-Way Trailer Connector to a 2007 Toyota Tacoma
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: American Made Trailer Wiring Harness Recommendation for a 2006 Toyota Tacoma
- Q&A: Recommended Towing Components for 2015 to 2017 Chevy Traverse
- Q&A: Parts Needed to Install Brake Controller in 2015 Toyota Tacoma Without Towing Package
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)