What is the AUX Power Pin for on a 7-Way Trailer Connector
Published 03/26/2015
Question:
What is the purpose of the AUX connection. I just replaced the 7-way connector on my SUV and discovered that the AUX connection is always live with 12V even with the SUV ignition switch off. Thank you.
asked by: Larry L
Helpful Expert Reply:
Some trailers may need an auxiliary power source to power additional 12 volt items on the trailer but this isn't as common as you might think. Now instead of aux power reverse lights are more common on vehicle side trailer connectors (and still not used by all that many trailers).
If your trailer does not need aux power and you don't want that circuit live at the connector you could remove that wire from the back of the 7-Way and cap it off with a wire nut, tape it up with electrical tape and stow it out of the way. But as long as nothing is drawing power on that circuit it would be fine to leave hot all the time.
Featured Help Information
Miscellaneous Media
Continue Researching
- Search Results: lugnut
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Shop: Aluminum AM03 Series Matte Black Trailer Wheel - 13" x 4-1/2" Rim - 5 on 4-1/2
- Shop: Dexter Surge Brake Actuator - Disc - Elec Lockout - 2" Ball - Zinc - 7.5K - 3" x 4"
- Search Results: gooseneck hitch
- Search Results: gooseneck coupler
- Search Results: trailer brake controller
- Shop: Bigfoot Hydraulic Jack Set - Single Pump - Manual Override - 24" Lift - 20,000 lbs
- Shop: Brake Controller
- Shop: DeeMaxx XL Trailer Wheel Lug Nut - Stainless Steel - 1/2" - Qty 1
- Video: Review of Americana Trailer Tires and Wheels - Aluminum Split Spoke Wheel 14 x 5-1/2 - AM43FV
- Shop: Towing Mirrors
- Search Results: tekonsha prodigy rf
- Search Results: 90250
- Search Results: 7 way round
- Q&A: The Function of the Auxiliary 12-Volt Connection on the 7-Way Trailer Connection
- Q&A: Hitch that Fits 1977 Ford F-250 with Narrower Frame
- Shop: Vehicle Tow Bar Wiring
- Shop: Trailer Wiring
- Shop: Suspension Enhancement
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Shop: Americana Aluminum Trailer Wheel - Split Spoke - 15" x 6" Rim - 5 on 4-1/2"
- Shop: Curt Trailer Hitch Receiver - Custom Fit - Class IV - 2"
- Q&A: Will Weigh Safe True Tow Work With Jayco Jay Feather 19MRK
- Q&A: How to Choose the Correct Weight Distribution Hitch Rating When Looking for a Trailer
- Q&A: Is Weigh Safe Weight Distribution System Difficult to Install
- Video: Curt 7-Way to RV Socket LED Circuit Tester Review
- Q&A: Breakaway Switch Diagram for Installation on a Dump Trailer with Trailer Mounted 12 volt Battery
- Video: Dexter DX7.5L A-60 Brake Actuator w Electric Lockout Review
on Trailer Brake Controller
