What Trailer Wiring Do I Need on My 2021 Jeep Grand Cherokee (Without Factory Tow Package)?
Question:
What Trailer Wiring Do I Need on My 2021 Jeep Grand Cherokee (Without Factory Tow Package)?
asked by:
Expert Reply:
For setting up your 2021 Jeep Grand Cherokee (without factory tow package) for wiring, you will first need a 4-way harness. For a 4-way that is compatible with your vehicle, I recommend the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C62VR. The Curt connector will allow you to install a 7-way into your vehicle for the functions you need for towing if you need those functions.
For a 7-way, once you have the 4-way installed, you need the Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat # ETBC7. This will give you the ability to hook up all of your trailer's tail light functions as well as add a brake controller. If you need help with installing the # ETBC7 with the for your vehicle's brake controller, I went ahead and attached the wiring diagram to this answer.
As far as a brake controller, I recommend the Curt TriFlex Trailer Brake Controller # C24VV with the Universal Wiring Adapter for Curt Controllers # C51515. The TriFlex will give you proportional brake control which means the controller will activate in proportion to your vehicle's braking action. It also comes with continuous diagnostic checks.
If you want a fancier wireless option, I recommend the Curt Echo # C51180. Like the TriFlex, the Echo also includes a proportional braking system. What sets the Echo apart from the competition is the ease of installation. You will be able to avoid complicated wiring and bulky control units in your vehicle.
I went ahead and attached videos of the installation process of the TriFlex and the Echo to this answer.

Products Referenced in This Question
Curt TriFlex NEXT Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Plug-In
- Under-Dash Box
- Under-Dash
- Up to 4 Axles
- LCD Display
- Single Trailer Only
- CURT
more information >
Curt Echo Wireless Brake Controller - 7-Way Plug-in w/ Bluetooth App - Up to 2 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Plug-In
- Smartphone App
- Under-Dash
- Up to 2 Axles
- Smartphone Display
- Multiple Trailers
- CURT
more information >
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 T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- Converter
- No Tow Package
- 4 Flat
- Plug and Lead
- Plug-In
- Hidden
- CURT
more information >
Product Page this Question was Asked From
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 >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Trailer Wiring
- Shop: Trailer Hitch
- Shop: Vehicle Tow Bar Wiring
- 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
- Shop: Curt No-Drill Bracket for 4-, 5-, or 6-Way Trailer Connector Mounting Brackets - Short
- Shop: Mounting Bracket 4-Pole Flat
- Shop: Brake Controller
- Shop: 7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires
- Shop: Curt Echo Wireless Brake Controller - 7-Way Plug-in w/ Bluetooth App - Up to 2 Axles - Proportional
- Shop: Suspension Enhancement
- Video: Mount: Curt Echo Wireless Brake Controller on a 2019 Toyota Highlander
- Video: Set up: Curt Echo Wireless Brake Controller on a 2015 Ford F-150
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Article: Which Sway Control Hitch is Right For Your Trailer?
- Q&A: Installing Trailer Hitch Ball on Ball Mount To Allow Correct Torque Without Ball Spinning
- Video: Install: Universal Installation Kit for Trailer Brake Controller on a 2022 Toyota Sienna
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: wireless brake controller
- Article: Trailer Wiring Diagrams
- Search Results: trailer dolly
- Search Results: anti~sway bars
- Search Results: sway control
- Search Results: sway control only
- Q&A: Where Does Blue Wire Go on 4 to 7-Way Adapter With Curt Echo Wireless Trailer Brake Controller
- Q&A: Mounting Bracket for 7-Way Trailer Connector on Toyota Highlander
- Q&A: Parts Needed to Added Concealed Trailer Hitch and Redarc Brake Controller to 2018 Toyota Sienna
- Q&A: How To Know If Your 2021 Hyundai Santa Fe Has A Factory Tow Package
- Q&A: 7-Way Kit Recommendation for 2021 Toyota Sienna for Use of Tekonsha RF Brake Controller
- Q&A: Does Draw-Tite Hitch Fit Hybrid Models of 2022 Toyota Sienna