Wiring Diagram for a 1997 Peterbilt Semi Tractor with 7-Pin Round Connector
Products Featured in This Question
Question:
What is the color codes and wiring for a 7 pole round pins for a semi tracor and traiker. A desription of what each wire is for would be greatly appreciated. THANK YOU
asked by: Horsepower U
Expert Reply:
The wiring color codes and wire gauge recommendations for the Pollak Heavy-Duty, 7-Pole, Round Pin, Trailer Wiring Connector, item # PK11700, are listed below.
White - Ground Return - 8 gauge
Black - Clearance, Side Marker, Identification - 12 gauge
Yellow - Left Turn and Hazard Signal - 12 gauge
Red - Stop Lamps and Anti-Lock Devices - 10 gauge
Green - Right Turn and Hazard Signal - 12 gauge
Brown - Tail, Rear Clearance, Marker and License-Plate Lamps - 12 gauge
Blue - Auxiliary Circuit/ABS - 10 gauge
I have also linked photos that show the wiring connections in detail for both the vehicle side connector, item # PK11720, and the trailer side connector that you referenced.

Product Page this Question was Asked From
Pollak Heavy-Duty, 7-Pole, Round Pin, Trailer Wiring Connector - Trailer End
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- Plug Only
- 7 Round - Round
- Pollak
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Q&A: Semi Trailer Light Function Locations on Heavy Duty 7-Way Pin Connection
- Shop: High Pointe Propane RV Range - 3 Burners - 16-1/4" Tall - Black
- Search Results: rv stoves and ovens
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Trailer Wiring Diagrams
- Shop: Greystone Built-In RV Microwave - 900 Watts - 0.9 Cu Ft - Black
- Shop: Greystone Built-In RV Microwave - 900 Watts - 0.9 Cu Ft - Black
- Shop: Gooseneck to 5th Wheel Trailer Coupler Adapter - Inner Tube - Round - 25K lbs
- Shop: Vehicle Tow Bar Wiring
- Shop: Ram Gooseneck to 5th Wheel Trailer Coupler Adapter Inner Tube - Square - 30,000 lbs
- Shop: Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter - Inner Tube - Square - 30,000 lbs
- Shop: Gooseneck to 5th Wheel Trailer Coupler Adapter - Inner Tube - Square - 25,000 lbs
- Shop: Brake Controller
- Shop: Base Plate for Tow Bar
- Q&A: How to Make an Adapter to Go from Semi Truck 7-Way Round to RV Style 7-Way Blade on Trailer
- Q&A: Wiring Diagram for 7-Way Round Pin Trailer and Vehicle Side Connectors
- Q&A: Correct Fuse Bypass for Flat Towing 2010 Chevy HHR
- Search Results: flat tow wiring harness
- Search Results: 2 receiver extension
- Video: Pollak Trailer Connector Adapter Review
- Article: Brake Controller Installation: Starting from Scratch
- Shop: Trailer Wiring
- Search Results: 5th wheel gooseneck adapter
- Article: How Level Should a Tow Bar Be When Flat Towing
- Article: Tow Bar Wiring: Which Wiring Kit is for You?
- Article: Flat Towing Package for 2006-2007 Chevrolet HHR
- Q&A: How to Adapt a 7-Way Round Connector to a 7-Way Flat
- Search Results: wireless trailer lights
- Search Results: curt echo wireless
- Q&A: Adapting a Semi Truck 7-Way to RV Style 7-Way to Use Wireless Light Kit to Flat Tow a Van