Not Ranked
My Optima battery is located in the passenger side of the trunk and I mounted the cut-off switch directly below the battery on the underside of the trunk. The switch kills the positive side of the power. My battery and alternator cables run to one side of the switch and the the power for the car runs from the other side. Like Roscoe, I have a tee handle mounted to the switch. But I have an aluminum rod that exits the car towards the rear via which the power can be killed by pushing on the handle from outside the car. I have also mounted a pull cable in the dash that trips this same switch, so I can kill the power to the car from the driver's seat. Seems to work well and complies with most sanctioning rules. The only catch is that when I pull the cable from inside the car, I have to reset the switch at the back of the car, so it's only used when parking the car for an extended time or in an emergency.
However, recently I have heard of a few cars catching on fire due to electrical problems and now I am considering adding a second switch on the rear bulkhead that can be switched off routinely anytime the ignition switch is turned off. It's seems like this method is very redundant though, but will provide peace of mind. I didn't realize you could have the cut-off switch inside the car and still be legal for NHRA or SCCA since the switch can't be readily accessed if the car is upside down...
Mike
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