How To Stop Battery From Draining While Flat Towing 2022 Jeep Wrangler JL
Updated 09/18/2025 | Published 08/24/2025
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Question:
I installed a blue ox EZ light wiring harness on a 2022 jeep Wrangler JL with the auto stop start feature and when I flat tow it the batteries drain. Do you have a fix for this? Please help.
asked by: Tom K
Expert Reply:
Hello Tom, thanks for reaching out. You can resolve this issue by installing a charge line kit on your Jeep. For that you can use the following:
- Roadmaster Battery Charge Line Kit for Towed Vehicles # RM-156-25
In order to use this you will need to install a 6-pin plug on the front of your Jeep and run a 7-way to 6-way coiled cable. For that I recommend part # BX88206.
Since you already have the Blue Ox EZ harness installed you will need to cut off the 4-flat end and wire it to the 6-pin plug I mentioned.
(click to enlarge)
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on Flat Tow Wiring Harness
Jesse M.
9/12/2025
Hey Tom, did installing the charge line kit on your Jeep solve the battery drain issue while flat towing? I'm asking because your experience could help others facing the same problem.