The same kit used in our race cars for the past 20 years. Flawless and very reliable.
NHRA requires an ON/OFF system when factory location battery is relocated.  Also a safety when running 9.99 or faster in the 1/4 mile.
 
This assembly allows all electrical power to be shut off for safety purposes. Features an easy and presentable inside installation. Comes with all hardware necessary, including the Big Switch 250 Amp Battery Disconnect. Welding required.
 
Push pull cable included