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: Brake Controller
- Shop: Trailer Wiring
- Shop: Pollak 7-Way to RV Socket LED Circuit Tester - Vehicle End
- Article: The 5 Best Trailer Drop Hitches You Can Buy
- Video: Pollak 7-Way to RV Socket LED Circuit Tester Spec Review
- Article: Trailer Wiring Diagrams
- Shop: Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Article: How to Install a Brake Controller on Chevrolet / GMC 1999-2006 Pickups
- Article: Brake Controller Installation: Starting from Scratch
- Search Results: trailer plug tester
- Search Results: 7 pin female plug
- Shop: Suspension Enhancement
- Article: 30-Amp and 50-Amp RV Service: What's the Difference?
- Search Results: 20 amp circuit breaker
- Shop: etrailer Hitch Pin Alignment Collar for Hitch Accessories - 2" Hitches
- Shop: Truck Bed Mat
- Shop: Trailer Wiring Junction Box
- Search Results: battery disconnect
- Search Results: rear lights
- Q&A: Parts Needed to Install a Prodigy P2 Brake Controller on a 2008 Jeep Grand Cherokee
- Q&A: Parts Needed to Install the Prodigy P3 Brake Controller on a 2002 Chevy Silverado K3500
- Q&A: Wiring Configuration for Tekonsha Prodigy P3 Trailer Brake Controller 90195
- Q&A: Brake Controller for 2024 Nissan Pathfinder Towing Trailer with Electric Over Hydraulic Brakes
- Q&A: Does Brake Controller Install Harness # 3050-P Fit 2021 Nissan Titan
- Q&A: Will The Circuit Tester # PK12741 Put The Truck In Trailer Towing Mode?
- Search Results: 7 pin extension
- Shop: Optronics Fleet LED Trailer Tail Lights w/ Grommets - Stop,Turn,Tail - Submersible - Oval - Qty 2
- Search Results: rv windows
- Video: In-Depth Review of the Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket
- Video: All About the Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket
on Automotive Tools
