For the most part all dragster have their batteries up front, many in the nose area of the car. They have to have a cutoff at the rear as the rulebook states, they all usually also have one in the cockpit as well. If you have a door car there are a few in cockpit kits for battery shut off like this one from Lokar that use a Morse cable

https://www.summitracing.com/parts/lok-1330023


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