Best Way To Add 4-Flat And 7-Way To 2021 Jeep Wrangler Sahara With Curt C96JR Flat Tow Harness
Updated 12/22/2025 | Published 07/09/2025
Products Featured in This Question
Question:
I have a 2021 Jeep Wrangler Sahara. I installed the C96JR wiring kit to flat tow behind my motorhome. On that kit there is a connector halfway in between the light connectors for hooking up trailer wiring. I would like to install a 7 pole and 4 pin combo plug to the rear of the jeep to haul a small trailer. What do I need?
asked by: Garry S
Expert Reply:
Hello Garry, thanks for reaching out. The plug your are referring to on the Curt # C96JR is actually an accessory port for plugging in a 4-flat trailer harness. The weird part is, Curt stopped offering the 4-flat accessory plug while leaving the design of the flat tow harness the same. So the accessory port is still there, but the plug you would need to go with it is not available.
That said, you can still add a 4-flat and 7-way combo to your Wrangler. Here is what you will need:
- Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 56407
- Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires # ETBC7
Those two kits combined contain everything you need to add a 4-flat and 7-way to the back of your Jeep. it includes all of the necessary wires for a brake controller, such as the Tekonsha P3 # 90195 which is what I recommend.
I have provided a link to an install video you should find helpful. What kind of trailer will you be pulling?
Mike
12/19/2025
in this situation you would cut off the connector and use those as inputs to a module for the lights? Or could you use that signal directly to power trailer lamps if "light duty" small trailer thanks Mike
Product Page this Question was Asked From
Curt Custom Tail Light Wiring Kit for Towed Vehicles
- Flat Tow Wiring Harness
- Plugs into Vehicle Wiring
- Wiring Harness
- Custom Fit
- 4 Flat
- CURT
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Search Results: rm15625
- Search Results: vehicle tow bar wiring
- Search Results: 118158
- Q&A: What is Best Plug and Play Flat Tow Lighting Kit for 2022 Jeep Wrangler Unlimited
- Video: How to Install the Roadmaster Battery Charge Line Kit - 2025 Jeep Wrangler
- Shop: Curt Custom Tail Light Wiring Kit for Towed Vehicles
- Search Results: tpms system
- Video: Setting up the Curt Custom Tail Light Wiring Kit for Towed Vehicles on a 2023 Jeep Wrangler
- Search Results: leaf spring
- Search Results: trailer spring
- Shop: Vehicle Tow Bar Wiring
- Shop: Roadmaster Battery Charge Line Kit for Towed Vehicles
- Shop: Pollak 6-Pole, Round Pin, Trailer Wiring Socket - Exposed Terminals w/ Rubber Boot - Vehicle End
- Shop: Roadmaster Direct-Connect Base Plate Kit - Removable Arms
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Shop: Base Plate for Tow Bar
- Video: Installation: Curt Custom Tail Light Wiring Kit for Towed Vehicles on a 2024 Jeep Wrangler Unlimited
- Video: Review of the Curt Custom Tail Light Wiring Kit for Towed Vehicles
- Video: Installing the etrailer Trailer Hitch Receiver on a 2025 Subaru Crosstrek
- Video: All About the Curt Tow Bar 7-Way to 6-Way Coiled Adapter Cord w/ 6-Way Socket
- Shop: Blue Ox Base Plate Kit - Removable Arms
- Q&A: How to Run a Charge Line to a 4-Way Connector
- Shop: Blue Ox Towed Vehicle Battery Charge Line Wiring Harness
- Video: Breaking Down the Vitrifrigo DP150i Double Door RV Mini Fridge w/ Freezer
- Shop: Trailer Wiring
- Search Results: roadmaster charge line
- Article: Roadmaster Vehicle Specific Base Plates
- Q&A: Parts Needed to Flat Tow 2021 Jeep Wrangler Unlimited
- Q&A: Is There Tow Bar Lighting and Trailer Wiring Solution for 2015 Jeep Wrangler Sport S
- Q&A: Parts Needed to Flat Tow 2025 Jeep Wrangler Sport
on Flat Tow Wiring Harness
Jesse M.
8/7/2025
Hey Garry, how did the installation of the 4-flat and 7-way combo go on your Jeep? Did the kits work well for your setup? I'm curious because your experience might help others in a similar situation.