How to Wire 4-Way Round Pin Trailer Wiring Connector PK11409
Updated 05/19/2010 | Published 05/16/2010 >
Products Featured in This Question
Question:
I have a boat trailer with a flat 4 connector. One of the female connectors broke. I want to replace it with a round connector. If I buy a 4 round connector how do I know which wire to put in which hole? thanks.
asked by: Alan
Expert Reply:
There is not an industry standard layout for wiring the 4-Way round pin connector, but there is a layout that is most accepted.
If you you are looking at the front side of the 4-Way round trailer side plug, the top left prong would be used for right hand turn signal and brake function, the top right pin would be the left side turn signal and brake light function, while the bottom left would be used for the tail light function. The last pin, on the bottom right would be used for the ground wire. See the picture to the right for more clarification.
The standard 4-Way wiring colors are white for the ground wire, yellow for left turn signal and brake light functions, brown for tail light function, and green for right hand turn signal and brake functions. These wires would simply be installed in the back side of a 4-Way round connector like part # PK11409.
To wire your vehicle, you would match the wiring layout you created on the trailer by wiring a vehicle end 4-Way round connector like part # PK11410 as a mirror image of the trailer connector.
If you need some additional wire or would just like to replace your current wiring while you are changing out the connector, we offer bonded 4 wire # 16-4B-1 by the foot.
Product Page this Question was Asked From
Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Connector - Chrome - Trailer End
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- 4 Round
- Plug Only
- Pollak
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Search Results: 4 pin round connector
- Shop: Base Plate for Tow Bar
- Article: Wiring Trailer Lights with a 5-Way Plug (It's Easier Than You Think)
- Shop: Demco Classic Base Plate Kit - Fixed Arms
- Q&A: Recommended Flat Towing System for a 2010-2012 Dodge Ram 1500
- Q&A: Base Plate Fit For 2010 Dodge Ram 1500
- Shop: Pollak Heavy-Duty, 4-Pole, Round Pin Trailer Wiring Connector - Chrome - Trailer End
- Shop: Roadmaster Base Plate Adapter Brackets for Blue Ox RV-Mounted Tow Bars
- Shop: Roadmaster Direct-Connect Base Plate Kit - Removable Arms
- Shop: etrailer Classic Base Plate Kit - Fixed Arms
- Shop: Roadmaster Tow Bar Adapter Brackets for Demco Base Plates
- Shop: Blue Ox Base Plate Kit - Removable Arms
- Shop: Vehicle Tow Bar Brake System
- Video: Hands-On with the Malone EcoLight Sport Trailer with V-Style Carriers for 2 Kayaks
- Search Results: boat trailer wiring
- Q&A: 4-Way Round Chrome Car End for a 2003 Jeep Wrangler To Tow Behind Motor Home
- Q&A: What Should the Voltage Output Be at the 4-Way Plug on Curt T-Connector Wiring Harness # 56016
- Video: Pollak Heavy-Duty, 4-Pole, Round Pin Socket, Concealed Terminals: The Breakdown
- Video: All About the 35 Ft 4-Way Trailer Wiring Harness
- Video: Install: Pollak Heavy-Duty, 4-Pole, Round Pin Socket, Concealed Terminals on a 2007 Jeep Liberty
- Search Results: bunk carpet
- Shop: Vehicle Tow Bar Wiring
- Q&A: Can 4-Pole Round Connector Be Installed on Hopkins Flat Towing Wiring Harness on 2015 Wrangler
- Q&A: Wiring Diagram for Blue Ox 4-Way Round Trailer Connector
- Video: All About the Replacement 4-Wire Plug for Blue Ox Coiled Electrical Cord
- Q&A: Wiring Diagram For Blue Ox 4-Wire Electrical Cord With Round Plugs
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Video: Comprehensive Review: Blue Ox 7-Wire to 4-Wire, Coiled Electrical Cord
- Article: Trailer Wiring Diagrams
- Shop: Trailer Hitch



