How to Prevent Backfeeding On Charge Line Kit
Updated 05/17/2026 | Published 05/15/2026
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Question:
Hi Folks: Can you please let me know which of your tow vehicle battery charge line kits have a diode or other method of preventing the tow vehicles battery from energizing the wire harness/connector when not in use and/or backfeeding the RV battery when in use when the RV is not running?
asked by: Greg D
0
Expert Reply:
Hey Greg! None of the kits specifically come with a diode to stop backfeeding. All you need to do is get a charge line kit like # RM-156-25 and then add in a simple diode # RM-690 on that circuit to prevent this issue.
What are you setting up to flat tow?
expert reply by:
Robin H
0
Roadmaster Diode
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Product Page this Question was Asked From
Roadmaster Battery Charge Line Kit for Towed Vehicles
- Accessories and Parts
- Flat Tow Wiring Harness
- Battery Charge Line Kit
- Roadmaster
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Richard
5/17/2026
I don't know anything about a diode. I had it professionally installed and I'm sure if it needed one they would have added it. The kit they recommended is as far as I know is all that was needed.