Parts Needed to Convert 4-Way Trailer Wiring of Mazda CX-5 to 7-Way
Updated 05/17/2018 | Published 05/16/2018 >
Products Featured in This Question
Question:
I have a small trailer with a 7 pin round female plug. No brakes Also have a trailer, with brakes, that uses the same 7 pin receiver on my truck. I have a Mazda CX-5 with a 4 pin flat plug that I would like to plug into the 7 pin female on the small trailer. Is that possible..I cant seem to find an adapter. Suggestions appreciated.
asked by: Mike
Expert Reply:
For a 4-way to 7-way adapter for an application where you would never plan to operate trailer brakes all you need is the part # 37185 which allows just the trailer taillight functions to pass through.
If you instead do plan to operate trailer brakes you'll need the adapter part # ETBC7 instead. This actually comes with the # 37185 plus all additional wiring to install a brake controller as well.
For a brake controller I would recommend the Prodigy P3 Brake Controller part # 90195. This is our best selling brake controller because of how well it works and how easy it is to setup. This is a proportional brake controller that senses the amount of braking the tow vehicle is applying and applies a proportionate amount to the trailer brakes. This will be the last brake controller you buy. It can easily be transferred to future vehicles as well.
Product Page this Question was Asked From
Adapter 4-Pole to 7-Pole and 4-Pole
- Custom Fit Vehicle Wiring
- Wiring Adapters
- Universal Fit
- 4 Flat to 7 Blade
- Plug and Lead
- Hopkins
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Video: Dutton-Lainson Hand Winch-DL10956 Spec Review
- Q&A: Can the 900 lb Dutton-Lainson Hand Winch be Used for a Pop Up Camper
- Q&A: Parts Needed to Have 12V Trailer Battery Charging Circuit on 7-Way Connector
- Search Results: trailer brake controller
- Search Results: etbc7
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Shop: Curt Universal Installation Kit for Trailer Brake Controller - 7-Way RV - 10 Gauge
- Shop: Dutton-Lainson Hand Winch - Worm Gear - Hex Drive - Split Reel - 1,500 lbs
- Shop: Dutton-Lainson TW4000 StrongArm Electric Winch - Marine - 1,500 lbs
- Shop: Dutton-Lainson StrongArm Electric Winch - Marine - 3,000 lbs
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Brake Controller Installation: Starting from Scratch
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Trailer Wiring Diagrams
- Q&A: My Vehicle has a 4-Pin Trailer Plug, but Trailer has 7-Pin Trailer Plug
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Q&A: Wiring and Brake Controller Needed for 1996 Ford F-150 with 4-Way Flat
- Article: Brake Controller Installation on a Ford Full-Size Van
- Article: How to Measure for Trailer Hitch Drop
- Q&A: Brake Controller Wiring for Ford E-450 Motorhome
- Q&A: Recommended Hitch and 7-Way Connector for a 2019 Ram ProMaster 3500 w/out the Tow Package
- Article: Determining Trailer Tongue Weight


