Easy to Install Tow Bar Lighting Kit and Charge Wire Recommendation for 2021 Jeep Gladiator
Updated 06/22/2026 | Published 06/17/2026
Products Featured in This Question
Question:
I need a flat tow wiring harness kit for a 2021 Jeep Gladiator Mojave with LED taillights. Towing with a Blue Ox tow system and a Blue Ox Patroit braking system. I am looking for a plug in system like the Curt one, but I amnot sure whther it will work with my Truck and components. I also need ot make certain there is a tirckle charge tot he battery from the 7 pin outlet ont ehmotorhome becuase with LEd lights, braking turns on the trucks computers and this will drain the battery on a long trip.
asked by: Barry J
Expert Reply:
Hey Barry, we have the Curt tow bar lighting kit part # C96JR that is a confirmed fit for your 20221 Jeep Gladiator and is a simple plug in type install like what you are looking for.
Then for a charge line to make sure your Gladiator battery is topped off you would want the Roadmaster part # RM-156-75 which runs a charge wire from the trailer wiring of your tow vehicle up to the battery of it. To then run a charge line from Gladiator battery to the connector you would want the part # RM-156-25.
Tony W.
6/19/2026
I installed the wiring harness and the battery charge kit on my 2026 Wrangler Sport S. My Wrangler has the stock tail lights, the wiring kit works great, just as advertised. I did remove the flat 4 wire plug that came wired with the harness. I purchased a 5 pin? Tow vehicle plug, mounted it to the front of the jeep and used the 5th pin for the battery charge circuit. You will need to purchase a 7 pin to 5 pin coiled wire connecting cable (e trailer) and connect the constant 12 volt circuit from the tow vehicle 7 pin to the correct terminal of the 5 pin outlet.
Darren S.
6/21/2026
I just installed this harness on a 2026 Wrangler Rubicon with no issues. Plug and play into the taillights and ran the wires up through the frame to a 6-pin connector on my Blue Ox base plate.
Nathan
6/21/2026
This was very easy to install, and I’ve gone on long multi day trips without charging the gladiator battery and there has been no issue for me.
Jameson C.
6/22/2026
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
Continue Researching
- Search Results: rm 156~75
- Search Results: rm156~75
- Shop: Vehicle Tow Bar Wiring
- Shop: Curt Custom Tail Light Wiring Kit for Towed Vehicles
- Search Results: rvibrake3
- Shop: Second Vehicle Breakaway Kit for Blue Ox Patriot Flat Tow Brake Systems
- Shop: Roadmaster Battery Charge Line Kit for Towed Vehicles
- Shop: Roadmaster Battery Charge Line Kit for Motorhomes
- Search Results: trailer wiring
- Shop: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord
- Shop: Blue Ox EZ Light Custom Plug-In Tow Bar Wiring Kit
- Shop: Demco 4-Diode Universal Tail Light Wiring Kit for Towed Vehicles - 7-Way to 6-Way Adapter Cord
- Shop: Trailer Wiring
- Shop: Trailer Hitch
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Search Results: trailer hitch
- Article: Trailer Wiring Diagrams
- Video: An In-Depth Look at the Roadmaster Battery Charge Line Kit for Towed Vehicles
- 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)
- Video: An In-Depth Look at the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
- Search Results: trailer tires and wheels
- Article: How to Measure for Trailer Hitch Drop
- Shop: Suspension Enhancement
- Q&A: Does etrailer Carry Furrion Chill Cube w/ Heat Pump to Replace Dometic Duo-Therm
- Search Results: base plate for tow bar
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Video: How to Choose a Trailer Brake Controller
- Shop: Base Plate for Tow Bar
on Flat Tow Wiring Harness
Gary T.
6/19/2026
Worked fine with my 2023 gladiator easy to install