How to Determine the Functions of the Pins on a Vehicle Side 7-Way Trailer Connector
Updated 05/22/2015 | Published 05/21/2015
Question:
Will this identify which wire is which function including 12v + and -?
asked by: Mike N
Helpful Expert Reply:
The Pollak circuit tester # PK12741 will tell you which functions are working in a 7-Way trailer connector but it doesn't tell you the location of the functions within the connector. But I can tell you that.
If you are looking at the face of a vehicle side 7-Way where you would connect the trailer:
1 o'clock position is 12 volt power
3 o'clock is right turn and brake lights
5 o'clock is output to trailer brakes
7 o'clock is ground
9 o'clock is left turn and brake lights
11 o'clock is running lights
Center is Auxiliary power or reverse lights
I have also included a picture and a link to our help article on wiring. Ignore the colors listed and focus on the functions and the positions they are in.
Product Page this Question was Asked From
Pollak 7-Way to RV Socket LED Circuit Tester - Vehicle End
- Electrical Tools
- Testers
- Circuit Tester
- Tow Function Tester
- Black
- Pollak
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Trailer Wiring
- Video: Pollak 7-Way to RV Socket LED Circuit Tester Spec Review
- Shop: Brake Controller
- Shop: Pollak 7-Way to RV Socket LED Circuit Tester - Vehicle End
- Article: How to Install a Brake Controller on Chevrolet / GMC 1999-2006 Pickups
- Article: Brake Controller Installation: Starting from Scratch
- Shop: Optronics Fleet LED Trailer Tail Lights w/ Grommets - Stop,Turn,Tail - Submersible - Oval - Qty 2
- Search Results: 20 amp circuit breaker
- Video: In-Depth Review of the Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket
- Video: Installation: Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket on a 2014 GMC Sierra 2500
- Video: All About the Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket
- Video: How to Choose a Trailer Brake Controller
- Q&A: Parts Needed to Install a Prodigy P2 Brake Controller on a 2008 Jeep Grand Cherokee
- Q&A: Wiring Configuration for Tekonsha Prodigy P3 Trailer Brake Controller 90195
- Q&A: Parts Needed to Install the Prodigy P3 Brake Controller on a 2002 Chevy Silverado K3500
- Shop: Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 15 Diodes - Red Lens
- Shop: Pollak Circuit Breaker - Cycling/Automatic Reset - 20 Amp - Straight Mount Bracket
- Shop: Durabilt Hammerlock Coupling Link for 5/8" Chain - 18,100 lbs - Qty 1
- Search Results: trailer plug tester
- Search Results: 7 pin female plug
- Shop: Pollak RV 7-Blade Plug End Socket w/Mounting Bracket
- Shop: Pollak Replacement 7-Pole, RV-Style Trailer Connector Socket - Vehicle End
- Shop: Suspension Enhancement
- Q&A: Does the Vehicle Battery have to be Disconnected to Install Trailer Wiring Harness # C55369
- Q&A: Does Replacing Trailer Wiring Connector Require Disconnecting Battery
- Q&A: Battery Disconnect for Dual Battery Setup on Diesel Truck
- Article: Trailer Wiring Diagrams
- Search Results: battery disconnect
- Search Results: 30 amp breaker
- Search Results: 30 amp fuse
on Automotive Tools
