How to Tell if Trailer Has 6-Way or 7-Way Installed
Question:
Hi guys, how can i tell what my trailer config is? I have a boat trailer with electric brakes, using a 6 pin round connector. I want to ensure that i order the correct adapter.
asked by: Jim
Expert Reply:
It sounds like you have a 7-way blade connector on your boat trailer as that is a very common connector on boat styles. This connector has 6 pins around the outside of the connector and a center pin for a total of 7.
Part # A7WCB would be what a 7-way would look like. If you had a 6-way it would look like part # PK11604.

Products Referenced in This Question
7-Way Round RV Style Trailer Connector - Trailer Side
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- Plug Only
- 7 Round - Blade
- Optronics
more information >
Pollak 6-Pole, Round Pin, Trailer Wiring Connector - Trailer End
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- Plug Only
- 6 Round
- Pollak
more information >
Product Page this Question was Asked From
Hopkins Heavy-Duty, Coiled Trailer Connector Adapter - 7-Way to 6-Pole Round - Center Pin 12V Power
- Trailer Wiring
- Wiring Adapters
- Single-Function Adapter
- 0 - 5 Feet Long
- 7 Round - Blade
- Plug and Lead
- 6 Round
- Hopkins
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Base Plate for Tow Bar
- Shop: Vehicle Tow Bar Wiring
- Shop: Brake Controller
- Shop: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord
- Shop: Trailer Wiring
- Shop: etrailer Invisible Base Plate Kit - Removable Arms
- Video: DIY Install: Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit on your 2019 Chevrolet Colorado
- Shop: Demco Dominator Non-Binding Tow Bar - RV Mount - 2" Hitch - 7,500 lbs
- Shop: Demco Tabless Base Plate Kit - Removable Arms
- Shop: Roadmaster Battery Disconnect for Towed Vehicle w/ Flat Tow Brake System - Gas Only
- Shop: Roadmaster Tow Defender Protective Screen for Towed Vehicles
- Video: An In-Depth Look at the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
- Search Results: mud flaps
- Video: Roadmaster Automatic Battery Disconnect Installation - 2019 Chevrolet Colorado
- Video: 2018 Chevrolet Colorado Demco Tabless Base Plate Kit: Complete Installation
- Q&A: Difference Between 7-Way Round and 7-Way Blade Connectors
- Video: Installing the etrailer Invisible Base Plate Kit on your 2017 Chevrolet Colorado
- Shop: Redarc Tow-Pro Liberty Brake Controller w/ Custom Harness - Dash Knob - Up to 2 Axles - Proportional
- Article: Wiring Trailer Lights with a 6-Way Plug (It's Easier Than You Think)
- Shop: Vehicle Tow Bar Brake System
- Video: Set up: Demco Tabless Base Plate Kit on a 2022 Chevrolet Colorado
- Search Results: roadmaster nighthawk
- Q&A: Replacement Cover for etrailer and Demco Tabless Baseplates
- Q&A: Compatible Tow Bars For The etrailer Invisible Base Plate Kit # e98966
- Video: Installing the etrailer Invisible Base Plate Kit on your 2018 Chevrolet Colorado
- Search Results: roadmaster
- Q&A: Pin Designations of the 7-way Round and the 7-way Flat on the 7-way Flat to Round Adapter
- Article: Trailer Wiring Diagrams
- Shop: Floor Mats
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)