How to Easily Disconnect Battery to Flat Tow Vehicle
Published 01/08/2022 >
Products Featured in This Question
Question:
I have 2020 gmc to flat tow and it has to disconnect negative battery post what option out there to make this simple and convenient. Thanks for ur time
asked by: Melvin E
Expert Reply:
We've got just what you need. I'd recommend the Roadmaster Automatic Battery Disconnect, part # RM-766. Once installed, the auto disconnect will allow you to disconnect the battery for flat towing with the simple push of a button. The installation isn't too difficult, as you can see in the linked installation video.
There are a few caveats you should be aware of, however:
• Disconnecting the battery, whether manually or with the Roadmaster automatic disconnect, will affect your vehicle's
electronics. You will need to reset various electrical components in your vehicle following use of this product.
• Not for use with diesel engine vehicles, due to the high compression ratio of diesels the engine can surge up to 10
times that of a gasoline engine at start up and can cause the solenoid to fail.
• A charge line, ( # RM-156-25 - sold separately), is a good idea if you have a braking system that is using power from
the towed vehicles battery while it is disconnected.
Product Page this Question was Asked From
Deka Lead Quick-Disconnect Battery Terminal - Universal Polarity
- Wiring
- Wire Connectors
- Quick Disconnects
- Deka
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Search Results: battery disconnect
- Video: Installation Guide for the Roadmaster Automatic Battery Disconnect - 2024 GMC Canyon
- Shop: Roadmaster Battery Disconnect for Towed Vehicle w/ Flat Tow Brake System - Gas Only
- Shop: Blue Ox Avail Non-Binding Tow Bar - RV Mount - 2" Hitch - 10,000 lbs
- Video: Roadmaster Automatic Battery Disconnect Installation - 2021 GMC Canyon
- Q&A: Will the Brake Buddy Battery Maintainer work with Battery Disconnect RM-766
- Video: Setting up the Blue Ox Base Plate Kit on a 2024 GMC Canyon
- Shop: Base Plate for Tow Bar
- Shop: Roadmaster Nighthawk All-Terrain Tow Bar for Blue Ox Base Plate - Non-Binding - LEDs - RV Mount - 8K
- Shop: Blue Ox Apollo Non-Binding Tow Bar - RV Mount - 2-1/2" Hitch - 15,000 lbs
- Shop: Roadmaster Falcon 2 Tow Bar - RV Mount - 2" Hitch - 6,000 lbs
- Shop: Demco Battery Disconnect Switch
- Shop: Blue Ox Base Plate Kit - Removable Arms
- Shop: Trailer Hitch
- Search Results: trailer hitch
- Article: Trailer Wiring Diagrams
- Video: An In-Depth Look at the Roadmaster Battery Charge Line Kit for Towed Vehicles
- Shop: Trailer Wiring
- Q&A: Which is Better Roadmaster or Blue Ox Tow Bar
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: trailer wiring
- Video: Comparing Portable Flat Tow Braking Systems - Curt RVi and Blue Ox Patriot
- Article: How to Measure for Trailer Hitch Drop
- Video: An In-Depth Look at the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
- Search Results: base plate for tow bar
- Q&A: Why Choose BTBRV Trailer Jack Foot Scale Over Standalone BTBRV 2,000 lb Scale
- Shop: Suspension Enhancement
- Search Results: trailer tires and wheels
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Video: Choosing the Right Tow Bar Wiring


