Solutions for 12 Volt Accessory Circuit Not Active on a Truck
Question:
Im not getting 12 volt on any prongs on either plugs bumper or in bed . I have checked fuses and relays !! All good or changed !! Without 12 volt power the battery want stay charged on the break away !! Thanks for your help !!
asked by: Kirk B
Expert Reply:
If you have a GMC or Chevy truck it could be simply that the connections under the hood of the truck just haven't been made. For whatever reason GM does not complete this circuit on all of the trucks with 7-ways so you have to do it manually. I attached a couple help articles that cover this.
Aside from that the problem would have to be wiring related or fuse/relay related.
One option you have would be to bypass the factory wiring and run your own 12 volt circuit straight to the battery. You would need 10 gauge wire like part # 10-1-1 sold by the foot and a breaker like part # 9510. You would just run the wire from the 12 volt pin of the 7-way at the rear of the vehicle up to the positive post of the battery through the breaker.
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
Curt 7-Way to RV Socket LED Circuit Tester - Vehicle End
- Electrical Tools
- Testers
- Circuit Tester
- Tow Function Tester
- CURT
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Q&A: Recommended Flat Towing Set Up for a 2019 Chevy Colorado
- Q&A: Suspension Enhancement Recommendation for 2019 Toyota RAV4
- Article: Trailer Wiring Diagrams
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Can a 2019 Chevrolet Colorado 4x4 Be Flat-Towed
- Article: Testing Trailer Brake Magnets for Proper Function
- Q&A: Recommended 7-Way Tester that is Compatible w/ Ram Factory Brake Controllers
- Q&A: Is There B and W Companion Hitch that Fits OEM Pucks of 2023 GMC 3500 Sierra
- Article: How to Measure for Trailer Hitch Drop
- Q&A: Will Flat Towed Vehicle Charge Line Kit Prevent Back-Feed and Overcharging?
- Q&A: Recommendation for Wiring Breakaway and Marine Battery on Enclosed Trailer
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Roadmaster Vehicle Specific Base Plates
- Article: Brake Controller Installation: Starting from Scratch