Does the T-One Wiring Harness 118727 Require Programing on a 2018 Jeep Grand Cherokee Altitude
Updated 12/31/2018 | Published 12/30/2018
Question:
I have a 2018 Grand Cherokee Altitude. I assumed it came pre-wired for trailer lights, but it didn’t. I have read several threads that say the dealer needs to flash the computer. Is that necessary? Will this harness work without having to do that?
asked by: Cory
Expert Reply:
The T-One Vehicle Wiring Harness part # 118727 for your 2018 Jeep Grand Cherokee will simply tie into the vehicle's tail light circuits therefore you won't need to have the dealer reflash or reprogram the ECU. If you were to use a wiring harness that connects to a tow plug on the vehicle like the T-One Vehicle Wiring Harness part # 118384 then there would be the possibility that you need to take the vehicle to the dealer to have them reflash or reprogram the ECU.
I have attached a sample install video for you as well.
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Base Plate for Tow Bar
- Shop: Trailer Wiring
- Shop: Vehicle Tow Bar Wiring
- Shop: Trailer Hitch
- Search Results: trailer lights wiring
- Search Results: towed vehicle wiring
- Search Results: roadmaster 4750
- Search Results: trailer light plugs
- Search Results: trailer hitch
- Search Results: custom fit vehicle wiring
- Search Results: towed vehicle protector
- Video: An In-Depth Look at the Roadmaster Battery Charge Line Kit for Towed Vehicles
- Video: All About the Roadmaster Tow Defender Protective Screen for Towed Vehicles
- Video: Curt Custom Fit Vehicle Wiring - Trailer Hitch Wiring - C56206 Review
- Video: Roadmaster Tow Defender Protective Screening Review RM-4700
- Video: A Closer Look at the Roadmaster Tow Defender Protective Screen on a 2021 Jeep Grand Cherokee
- Video: 2018 Jeep Grand Cherokee Roadmaster Direct-Connect Base Plate Kit: Complete Installation
- Shop: Roadmaster Crossbar-Style Base Plate Kit - Removable Arms
- Shop: Blue Ox Avail Non-Binding Tow Bar - RV Mount - 2" Hitch - 10,000 lbs
- Shop: Roadmaster Direct-Connect Base Plate Kit - Removable Arms
- Shop: Roadmaster Battery Charge Line Kit for Towed Vehicles
- Shop: etrailer Invisible Base Plate Kit - Removable Arms
- Shop: Second Vehicle Kit for Roadmaster 9700 Flat Tow Brake System
- Shop: Roadmaster Direct-Connect Base Plate Kit - Removable Arms
- Video: Installing the Demco Tabless Base Plate Kit on a 2021 Jeep Grand Cherokee
- Q&A: Recommended Trailer Wiring For 2020 Jeep Grand Cherokee Without Tow Package
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Trailer Wiring for 2020 Jeep Grand Cherokee without Tow Package
- Q&A: Recommended 4-Way Trailer Wiring Harness for 2019 Jeep Grand Cherokee
- Q&A: Trailer Wiring Harness & Brake Control Wiring for 2016 Jeep Grand Cherokee with/without Tow Package
on Custom Fit Vehicle Wiring
