Difference Between 7-Way Round and 7-Way Blade Connectors
Question:
is there a difference between a 7 pin round style trailer connector and a 7 way rv blade connector? i keep seeing the two different descriptions of seemingly the same part, is it just different terms for the same style connector?
asked by: Scot
Expert Reply:
There is a difference between a 7-way round and and 7-way rv blade connector. If you take a look at the accompanying photo, which is from our linked article on trailer wiring you can see that the connector on the left has blade-style pins while the one on the right has round pins.
There is even an adapter, the Trailer Connector Adapter # HM47425, which is a 7-pole round to 7-way blade if you need to go from the uncommon 7-way round to more common 7-blade.
I have linked each of our available 7-pin round and 7-way blade connectors for you to take a look at as well.

Product Page this Question was Asked From
Hopkins Trailer Connector Adapter - 7-Pole Round Pin to 7-Pole RV
- Trailer Wiring
- Wiring Adapters
- Single-Function Adapter
- 7 Round - Round
- Plug and Lead
- 7 Round - Blade
- Hopkins
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Trailer Wiring
- Shop: Brake Controller
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Most Popular Wheel Bearings
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Shop: Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug
- Shop: B&W Turnoverball Underbed Gooseneck Trailer Hitch w/ Custom Installation Kit - 30,000 lbs
- Shop: etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector
- Article: Trailer Lighting Requirements
- Q&A: Will The Curt Echo Manual Override Button C83HR Work Without The App?
- Shop: Vehicle Tow Bar Wiring
- Shop: Pollak 7-Pole Round Pin Trailer Wiring Connector - Nylon
- Shop: Pollak Trailer Connector Adapter - Vehicle End - 7-Pole Round to 7-Way Blade
- Q&A: How to Tell if Trailer Has 6-Way or 7-Way Installed
- Shop: Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Pole Flat Connectors
- Video: etrailer Enclosed Trailer Transition Plate Installation
- Search Results: trailer wiring
- Search Results: gooseneck hitch
- Article: Trailer Wiring Diagrams
- Video: Detailed Breakdown of the Curt Trailer Connector Adapter with Backup Alarm
- Q&A: What is the Difference Between 7-Way RV and Utility Trailer Connectors
- Search Results: 7 pole round to 6 blade
- Search Results: hopkins 7 pin
- Q&A: How Does the Curt Connector # C57102 Wire Up
- Search Results: 5th wheel gooseneck adapter
- Q&A: How Does The etrailer Trailer Tongue Tool Box Compare To Other Options?
- Video: Installing the Redarc Tow-Pro Liberty Brake Controller on a 2017 Toyota Highlander
- Search Results: junction box
- Search Results: 7 way plug
- Q&A: How Much Should It Cost To Completely Rewire a Trailer
Jason M.
4/13/2020
It seemed the other day when I went to pull home a toyhauler we just purchased, the camper plug didnt fit exactly correctly. The truck plug is the factory 7 blade plug on a 2016 Toyota Tundra. It seemed like the male blade part on the truck was too big to slide in the female camper plug. The width was fine but the trucks metal blade are, what I would call, folded over spring type metal prongs, to where the camper plug looks like it takes more of a single thickness metal spade terminal. It all actually worked, but it was only held in by the spring-loaded cover pressure holding it in place. It did get us home but I want something that makes better contact. Do you have any thoughts on this?