How to Prevent Backfeeding On Charge Line Kit
Updated 05/17/2026 | Published 05/15/2026
Products Featured in This Question
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
(click to enlarge)
(click to enlarge)
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
more information >
Featured Help Information
Instructions
Continue Researching
- Search Results: vehicle tow bar wiring
- Shop: Vehicle Tow Bar Brake System
- Shop: Vehicle Tow Bar Wiring
- Search Results: towed battery charger
- Search Results: blue ox trailer hitch
- Search Results: blue ox hitch adapters
- Search Results: blue ox tow bar
- Video: Easily Install Your Roadmaster 12 Volt Outlet Kit - 2026 Ford Bronco
- Shop: Blue Ox Patriot Portable Flat Tow Brake System - Proportional
- Shop: Blue Ox Towed Vehicle Battery Charge Line Wiring Harness
- Video: How to Install Your Roadmaster Smart Diode Kit - 2023 Ford Bronco
- Shop: Roadmaster Smart Diode Kit for Variable Voltage LED Tail Lights - 7-Way to 6-Way Adapter Cord
- Shop: Base Plate for Tow Bar
- Video: Installation: Blue Ox Patriot Portable Flat Tow Brake System on a 2022 Ford F-150
- Shop: Trailer Wiring
- Shop: Trailer Hitch
- Shop: Blue Ox Base Plate Kit - Removable Arms
- Shop: CURT RVibrake Towed Battery Charger+ for Flat Towing
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Shop: Curt Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Video: The Low-Down on the Roadmaster Single Park Light Diode
- Video: 2026 Ford Bronco DIY Installation - Roadmaster Smart Diode Kit
- Q&A: How Does the Charge Line from a Motorhome to Towed Vehicle Work Together
- Q&A: Is Diode Needed to Prevent Trailer Battery from Backfeeding to Breakaway System
- Q&A: How To Install A Single Feed Diode To Prevent Backfeeding
- Q&A: Blue Ox Patriot Supplemental Braking System Power Draw
- Shop: Roof Rack
- Video: Install: Blue Ox Patriot Portable Flat Tow Brake System on a 2022 Jeep Wrangler Unlimited
- Video: Blue Ox Base Plate Kit DIY Installation - 2024 Ford Bronco
- Q&A: How To Install A Roadmaster Hy-Powered Diode On Trailer 7-way
Explore Expert Info
![Our Expert]()
on Accessories and Parts
on Accessories and Parts
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.