Wiring Diagram for a 1997 Peterbilt Semi Tractor with 7-Pin Round Connector
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.

Products Referenced in This Question
Pollak Heavy-Duty, 7-Pole, Round Pin Trailer Wiring Socket - Vehicle End
- Trailer Wiring
- Trailer Connectors
- Vehicle End Connector
- Plug Only
- 7 Round - Round
- Pollak
more information >
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
- Shop: Trailer Hitch
- Shop: Trailer Wiring
- Shop: Nerf Bars - Running Boards
- Shop: Brake Controller
- Q&A: Semi Trailer Light Function Locations on Heavy Duty 7-Way Pin Connection
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Search Results: 25980
- Shop: Westin Grate Step Nerf Bars with Custom Install Kit - 6-1/4" Wide - Black Powder Coated Steel
- Article: Trailer Wiring Diagrams
- Shop: Vehicle Tow Bar Wiring
- Shop: 5-Leaf Slipper Spring w/ Radius End for 10,000-lb Trailer Axles - 30-1/2" Long
- Shop: etrailer Anti-Rattle Hitch Collar for 2" Hitch Receivers - Preorder
- Shop: Carr Custom-Fit Side Step - Super Hoop - Black Powder Coat - 17" Step - Qty 1
- Shop: Carr LD Custom Fit Side Steps - Polished Aluminum - 14" Step - 1 Pair
- Shop: Bargman 7-Way, RV-Style Connector w/ 10' Heavy Duty Insulated Cable - Trailer End
- Shop: Tekonsha Prodigy P3 Trailer Brake Controller w/ Custom Harness - 1 to 4 Axles - Proportional
- Shop: Gooseneck Hitch
- Search Results: 13421
- Search Results: bulldog
- Search Results: easy grease
- Search Results: hub cap
- Search Results: 10gdh~eq42rh34
- Video: Let’s Check Out the Carr Custom-Fit Side Step
- Search Results: threaded bearing buddy
- 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: Available Locks and Replacement Parts for Horse Trailers
- Q&A: Curt Trailer Hitch Winch Mount # C31010 Weight Capacity
- Q&A: Bolt Hole Spacing of Buyer's Products Lunette Ring
- Q&A: Is There an Exact Replacement For a Tie Down 46250 Brake Caliper or What Option is There
- Q&A: Recommended Replacement For A Tie-Down Engineering Disc Brake Hub