Moroso 74101 Heavy-Duty Battery Disconnect Switch
Using Moroso's disconnect switch lets you have a quick twist of the non-slip handle that shuts off all electrical current to the electric fuel pump, electric water pump, ignition, instruments, etc. For drag racing vehicles, the switch should be mounted on the vehicle's rear panel for easy accessibility. For oval track and road racing applications, the switch should be mounted so that it can easily be reached by the driver or service personnel from outside the vehicle.  In street applications, the switch can be hidden to thwart car thieves.