Recommendedations To Change 4-Way Connector On Trailer To 7-Way Connector
Updated 07/23/2014 | Published 07/21/2014
Products Featured in This Question
Question:
I have a trailer with a 4 pole connector wiring harness, and I would like to change it to a 7 pole wiring harness so I dont have to locate my adapter each time I need to tow the trailer. Do you sell a product that can fullfil my wish to convert my trailer from 4 pole to 7 pole?
asked by: Hans S
Expert Reply:
It sounds like you want a permanent change from the 4-way connector to a 7-way connector on your trailer.
We carry trailer-end 7-way connectors and the one I recommend is the Pollak Metal 7-Pole Connector, part # PK12702. This is a blade-style connector. If you have a round-pin connector on your vehicle I recommend part # PK11700.
This would require cutting the 4-way connector off your trailer. You would need to test the wires on the trailer using a 12V power source to see what each of the wire functions are. I recommend using a circuit tester like part # PTW2993.
You would then need to use the circuit tester to test each wire on the 7-way installed on the vehicle for function, and then attach the trailer wires to the appropriate pins on the new connector so they match. If the 7-way on your vehicle has functions, they would not be available on the trailer side. I have attached a helpful article that explains trailer wiring you can check out.
My recommendation is to use an adapter that will attach to the 4-way connector like part # PK12716, on your trailer, and plugged into the vehicle 7-way connector. This would give you the capability to tow a trailer that has the 4-way connector as you said you have, or to tow a trailer with a 7-way connector.
Product Page this Question was Asked From
Pollak Metal 7-Pole, RV-Style Trailer Connector - Trailer End
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- 7 Blade
- Plug Only
- Pollak
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Search Results: 7 pin trailer harness
- Search Results: brake flange
- Search Results: brake mounting flange
- Video: Review of CURT Trailer Wiring - Trailer End Cold Weather 7 Way RV Style Connector - C23RJ
- Shop: Brake Controller
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Recommended Complete Towing Setup for 2017 Toyota Highlander SLE AWD for 3,850 lb Trailer
- Shop: Brake Mounting Flange for 1-3/4" Round Trailer Axles - 2K
- Shop: Trailer Brake Mounting Flange for 3-1/2" Axles, 12-1/4" Brake Assemblies
- Shop: 7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires
- Shop: Redarc Tow-Pro Liberty Brake Controller w/ Universal Wiring Harness - Dash Knob - Proportional
- Shop: Pollak Metal 7-Pole, RV-Style Trailer Connector - Trailer End
- Shop: Wiring Kit for 2, 4, 6, and 8 Brake Electric Trailer Brake Controllers
- Shop: Curt Cold Weather 7-Way RV Style Connector - Trailer End - 10' Long - RV Standard
- Shop: Front Mount Hitch
- Shop: Roof Rack
- Q&A: Parts Needed to Tow Trailer with 2017 Toyota Highlander
- Q&A: Can a Hitch Adapter Be Used with a Weight Distribution System
- Q&A: Weight Distribution Hitch for Pop-Up Camper With 2,000 lb GVWR
- Q&A: Recommended Roof Rack and Bike Rack for Pop-Up Camper
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Article: Trailer Wiring Diagrams
- Search Results: trailer hitch
- Shop: Trailer Hitch
- Video: How to Choose a Trailer Brake Controller
- Search Results: trailer wiring
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Video: Redarc Tow-Pro Liberty Brake Controller Review RED24FR
- Shop: Trailer Wiring
- Search Results: trailer tires and wheels
on Trailer Wiring
