Looking For Adapter To Go From 7-Pin Flat To 7-Pin Round
Updated 10/27/2025 | Published 03/15/2025 >
Products Featured in This Question
Question:
Hello, is there by chance a 7 pin flat to 7 pin round pole pin adapter that is listed on the site that I may have missed or is this something that I would have to have custom made?
asked by: Warren R
Expert Reply:
Hello Warren, thanks for reaching out. We may have an adapter for you. If your trailer is a 7-round and your truck is a 7-pin flat, you can use the adapter part # 47595. That or what a lot of people do it replace the 7-round with a standard 7-flat like part # PK12706. This way no adapter would be required.
If the scenario is the other way around and your truck has the 7-round and your trailer is a 7-flat, I am afraid there is no adapter for this. The best option here would be to swap out the plug on your truck for a standard 7-flat.
If you want to look into it let me know what your tow vehicle is and I can see what your options are.
Continue Researching
- Shop: Trailer Wiring
- Article: Testing Trailer Brake Magnets for Proper Function
- Article: Trailer Wiring Diagrams
- Search Results: accessories and parts
- Shop: Vehicle Tow Bar Wiring
- Shop: Pollak Trailer Connector Adapter - 7-Blade Plug to 7-Pole Round Pin - Nylon
- Article: Trailer Lighting Requirements
- Video: All About the Pollak Trailer Connector Adapter
- Shop: Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End
- Shop: Roadmaster Brite-Lite 3-to-2 Tail Light Converter for Towed Vehicles
- Q&A: Wiring Adapter to Convert 7-Blade Flat Trailer Connection to 7-Pin Trailer Connection
- Q&A: Troubleshooting Wiring Not Matching up When Using Hopkins 7-Way Blade to 7-Way Round Adapter
- Video: Complete Breakdown of the Roadmaster Brite-Lite Wiring Converter
- Q&A: What are the Funtions of 7-Way Blade Style and 7-Way Round Pin Trailer Connectors
- Shop: Pollak HD, 7-Pole Round Pin Connector w/Cable Guard
- Q&A: How to Make 7-Way Blade to 7-Way Round Adapter for Tractor Trailer to Use Curt Echo
- Q&A: How to Make Adapter to Connect RV 7-Way to Semi Truck 7-Way
- Q&A: Hooking a Gooseneck Trailer with RV 7-Way Plug to 1999 International 9100 7-Way Round Plug
- Q&A: Why Would Stoplights Not Function With 7-Way Round Trailer Wiring Setup

Jesse M.
10/27/2025
Hey Warren, did you end up trying the adapter or swapping the plug on your truck or trailer? Knowing which route worked could really help others facing the same wiring setup.