Many sanctioning bodies require the use of a Master ON/OFF battery disconnect switch for any vehicle competing with a rear located battery. This allows their safety team to quickly disconnect power to all vehicle accessories as well as turn off a running engine in the event of an accident.

Our Master ON/OFF Add-On Kits are compatible with 1- or 3-wire alternators, regardless of the brand.

Our 47-piece kit is the most comprehensive available at any price!

Search the ‘net for master on/off kits, and you’ll find that nearly everyone has a different approach to the topic. Our kits have been designed to eliminate the guesswork and make the installation a snap. These kits DO NOT INCLUDE the battery disconnect switch itself, but we offer battery disconnect switches separately.

Master ON/OFF Add-On Kit Specifics

The Best Parts

All eyelets and battery terminals are installed via our crimping press and insulated with the thickest adhesive lined heat shrink available. This super-thick adhesive-lined heat shrink tubing prevents battery acid or oxidation from entering the connection itself.

Additionally, we include a complete assortment of Grade 5 Hardware with each kit. You’ll have every single thing you need to get the job done right the first time. We guarantee it!

Step By Step Full Color Instructions

Each kit includes complete step-by-step instructions in full color so that your installation goes smoothly! They’re super easy to install and require only common hand tools to install them.

Which Kit Do You Need?

We offer kits for both our Standard and Deluxe Battery Relocation Kits. Our 1/0 AWG kits are designed for alternators making up to 200 Amps. The 2 AWG kits are designed for alternators making up to 150 Amps, and the 4 AWG kits are designed for alternators making up to 100 Amps. They are all compatible with any of our battery relocation kits. Simply choose the add-on kit based on your alternator’s output rating.

You absolutely, positively will not have to run to the hardware store to install these kits. How do we know? Simple. We’ve actually installed them ourselves.