Recommended Flat Tow Wiring Harness for a 2023 Jeep Grand Cherokee 4XE
Updated 10/24/2025 | Published 04/07/2025
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Question:
Hello, We previously purchased a Roadmaster flat tow system for a 2020 Jeep Grand Cherokee. We have change vehicles and now have a 2023 Jeep Grand Cherokee 4XE. I need the Jeeps 6 Pin to vehicle charging to brake - turn signal wiring and diode packs. At this time I will not install a braking system as out Fleetwood 39Z Bounder has ample braking to handle the Jeep. Plus there is the additional problem with lack of space under passenger seat where Jeep Brake Controller would normally be installed. I am also considering air brake as we have air brakes but am not familiar with that equipment/installation needs. FYI: I have extensive heavy and auto mechanics and electronics knowledge so running individual wires, soldering, weather proofing etc is easily in my wheel house. Can you please provide the part numbers for the Jeep electrical needs so I can connect the 6 pin coiled cable to charging the Jeep while towing to brake/turn signal as well as the front baseplate with arms fro the 2023 4XE and we have front hooks installed. Please advise as soon as possible. Thanks Carl Can you please provide the cost
asked by: Carl F
Expert Reply:
Hey Carl, since you didn't outright mention it I'm assuming you don't have the ParkSense feature so you'll just need the Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles # RM-15267 with the Chare Line Kit # RM-156-25.
If you do have the ParkSense feature, then you'd want the Roadmaster Smart Diode Kit for Variable Voltage LED Tail Lights # RM63MR instead.
If you need any other components for the flat tow, please let me know in the comments and I'd be happy to help!
Product Page this Question was Asked From
Curt Universal Tail Light Wiring Kit for Towed Vehicles - 4-Way Flat Connectors
- Flat Tow Wiring Harness
- Splices into Vehicle Wiring
- Wiring Harness
- Universal Fit
- 4 Flat
- CURT
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Jon G.
10/22/2025
Hey Carl, how did things go with the Roadmaster wiring and charge line kits for your Grand Cherokee 4XE? Your setup could really help others working on similar flat tow wiring. Sharing what worked might guide the next person tackling this upgrade.