How to Activate Trailer Charge Circuit of 7-Way for Trailer Battery
Question:
Our VW Atlas tow package has been installed at VW. While driving we found although the brakes and lights work our trailer batteries are not charging. The wiring was factory done. Any ideas?
asked by: Linda M
Expert Reply:
It's actually pretty common for factory tow package wiring to not have the 12 volt circuit complete on the 7-way. What you'll need to do is activate the circuit yourself or have the dealer do it. What will need to happen is you'll need to run a length of 10 gauge wire like part # 10-1-1 (sold by the foot) through a breaker like part # 9510 from the positive post of your vehicle battery to the 1:00 pin of your 7-way and you'll have the charge circuit active.
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
Continue Researching
- Shop: Trailer Wiring
- Shop: Brake Controller
- Shop: 10 Gauge Primary Wire - Blue - per Foot
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Video: Flex-a-lite Radiator Fans FLX30357K Review
- Video: Redarc Tow-Pro Trailer Brake Controller Plug-and-Play Wiring Harness Review
- Q&A: Recommended Wire Gauge for Wiring Electric Brakes on Trailer
- Q&A: Installing 12 Volt Power Circuit to 7-Way Trailer Connector on Rear of Tow Vehicle
- Q&A: Installing 7-Way Trailer Connector on 1995 Japanese Market Toyota Land Cruiser Prado
- Shop: Battery to Fuse Holder Cable for Redarc MIDI Fuse Kit
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Shop: Flex-a-lite 40 Amp Fuse Holder
- Shop: Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Shop: 10 Gauge Primary Wire - Red - per Foot
- Search Results: 10 gauge wire
- Search Results: 40 amp fuse
- Search Results: breakers
- Search Results: 40 amp breaker
- Search Results: circuit breaker
- Search Results: gauge
- Q&A: How to Tell if 12v Circuit on 7-Way is Active on 2019 Volkswagen Atlas
- Q&A: Brake Controller for a Volkswagen Atlas and Trailer with LED Lights
- Q&A: Brake Controller Recommendation for 2019 Volkswagen Atlas with Factory 7-Way
- Article: Trailer Wiring Diagrams
- Shop: T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Q&A: How to Charge a Trailer Battery Through a 7-Way Connector
- Shop: Suspension Enhancement
- Shop: Vehicle Tow Bar Wiring
- Shop: RV Camera
- Shop: Trailer Hitch