Complete Brake Controller Set-Up For A 2012 Mazda CX-9
Question:
I purchased this wiring pack in 2019 and have not yet installed it as we have another vehicle that is our typical tow vehicle but will be selling that vehicle soon. The 2 small trailers we usually use has a 4 pin flat connection. On rare occasions i will need to pull a small casita camper with the mazda that is a seven pin configuration. Rare bc the mazda towing capacity is too close to the empty casita trailer weight Does it make the most sense to install this kit and buy an adapter for this 4 pin to 7 pin? Is it best to abandon the 4pin kit I haven’t yet installed and Buy another kit that can do both 4 and 7 pin? Is there a smarter option that i am not considering?
asked by: Jay R
Expert Reply:
I wouldn't abandon your T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118520 for your 2012 Mazda CX-9.
Since you mention that one of your trailers requires a 7-way and one does not, I recommend installing the Universal Installation Kit for Trailer Brake Controller # ETBC7 as well.
This kit will give you the functionality of a 7-way and a 4-flat trailer connector so you can easily tow both of your 2 Casita Trailers.
Additionally, the only way to be able to use a 7-way connector is to first have a 4-installed as well, so no matter what you're going to need to install # 118520.
Finally, since one of your trailers has a 7-way installed, it likely has brakes. I recommend also adding brake controller # C84VV with the harness # C51515 to your setup.
Products Referenced in This Question
Universal Wiring Adapter for Curt Trailer Brake Controllers
- Accessories and Parts
- Trailer Brake Controller
- Wiring Adapter
- Plugs into Brake Controller
- Universal
- CURT
more information >
Curt Discovery NEXT Trailer Brake Controller - 1 to 4 Axles - Time Delayed
- Trailer Brake Controller
- Time Delayed Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LCD Display
- Up to 360 Degrees
- CURT
more information >
Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Accessories and Parts
- Trailer Brake Controller
- Installation Kits
- etrailer
more information >
Product Page this Question was Asked From
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Powered Converter
- Custom Fit
- 4 Flat
- Tekonsha
more information >
Featured Help Information
Instructions
Continue Researching
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Shop: Brake Controller
- Shop: Trailer Wiring
- Video: Curt T-Connector Vehicle Wiring Harness Installation - 2018 Mazda CX-9
- Search Results: trailer brake controller
- Q&A: How To Add a 7-Way Trailer Connector To a 2022 Mazda CX-9
- Q&A: Can I Install a Trailer Wiring Harness on a 2010 Mazda CX-9
- Q&A: What is the Towing Prep Package on a 2010 Mazda CX-9 and Does it Include Trailer Wiring
- Q&A: Best Way to Run Power Wire To Install Tow Ready T-One Vehicle Wiring Harness on 2007 Mazda CX-9
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Shop: T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Video: Choosing the Right Trailer Wiring
- Shop: Trailer Hitch
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Search Results: brake controller
- Shop: Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Article: Trailer Wiring Diagrams
- Search Results: etbc7
- Shop: Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector
- Q&A: What is the Difference Between the Tekonsha Prodigy P2 and the P3 Brake Controllers
- Article: Brake Controller Installation: Starting from Scratch
- Video: Redarc Tow-Pro Liberty Brake Controller Review RED24FR
- Shop: Gooseneck Hitch
- Shop: Redarc Tow-Pro Liberty Brake Controller - Dash Knob - 1 to 2 Axles - Proportional
- Search Results: trailer hitch
- Search Results: hitch
- Video: Ultimate Overview of the No-Drill Mount for Electrical Mounting Bracket