Correct Tail Light Harness to Flat Tow 2020 Ram 1500 4WD
Question:
Will this harness allow for turn signals, brake and running light to function with towed car Ram 1500 battery disconnected? I purchased the universal bulb led kit but i don’t believe it can fit into the led tail lights on a 2020 Ram 1500.
asked by: Steve C
Expert Reply:
The Tow Ready Tail Light Isolating Diode System with 4-Pole Connector # TR118821 (confirmed to fit your 2020 Ram 1500) ,draws the power from the RV in order to activate the turn signals, running lights and brake lights on your Ram, so the towed vehicle's battery being disconnected wouldn't pose a problem.
That being said, based on the information under the "Recreational Towing" section in your owner's manual (pp. 423-427), your Ram's battery, does not need to be disconnected when flat towing (only acceptable for 4WD models) - the vehicle's ignition does need to be turned off after following the steps outlined in your manual.
If you're concerned with draining your battery while your truck is being flat towed, you can use a charge line to maintain it. The Roadmaster # RM-156-25 is what you will install in the Ram and # RM-156-75 will install in the RV.
We don't have any bulb and socket kits listed under our fit-guide for your Ram, which probably means there isn't enough space for them to be installed inside the tail light housing, as you suspected.
Products Referenced in This Question
Roadmaster Battery Charge Line Kit for Towed Vehicles
- Accessories and Parts
- Tow Bar Wiring
- Battery Charge Line Kit
- Roadmaster
more information >
Roadmaster Battery Charge Line Kit for Motorhomes
- Accessories and Parts
- Tow Bar Wiring
- Battery Charge Line Kit
- Roadmaster
more information >
Featured Help Information
Instructions
Continue Researching
- Shop: Vehicle Tow Bar Wiring
- Search Results: blue ox wiring harness
- Shop: Roadmaster Battery Charge Line Kit for Motorhomes
- Video: Blue Ox Base Plate Kit Installation - 2021 Ram 1500
- Shop: Base Plate for Tow Bar
- Shop: Trailer Wiring
- Search Results: rm~152~98146~7
- Q&A: Install Instructions for Tow Ready Tail Light Isolating Diode System TR118821
- Shop: Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
- Search Results: blue ox 6 pin
- Search Results: electrical grease
- Shop: RoadMaster 6-Wire Trailer Connector - Vehicle End
- Shop: Blue Ox 6-Pole, Round Pin, Trailer Wiring Socket - Vehicle End
- Shop: Roadmaster Tail Light Wiring Kit w/ 7-Way to 6-Wire Connector - LED Bulb and Socket - Red
- Shop: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Wire Hybrid Cord
- Shop: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Wire to 6-Wire Straight Cord
- Search Results: base plate
- Search Results: battery charge line kit
- Video: Blue Ox Tow Bar Wiring Kit Installation - 2020 Jeep Gladiator BX8848
- Video: Best 2019 Ram 1500 Flat Tow Setup Options - Base Plates
- Video: Blue Ox Base Plate Kit Installation - 2022 Ram 1500
- Video: Best 2020 Ram 1500 Flat Tow Set Up Options - Base Plates
- Video: Roadmaster Tow Bar Wiring Kit Installation - 2021 Ram 1500
- Search Results: tow ready
- Video: Review of Roadmaster - Tow Bar Braking Systems - RM-88342
- Article: Flat Towing Package for 2018 Ram 1500
- Shop: Vehicle Tow Bar Brake System
- Article: Trailer Wiring Diagrams
- Shop: Trailer Hitch
- Q&A: Wiring a Camper Shell Third Brake Light on a 2017 Chevrolet Silverado