Since most all vehicles these daze are run with fuel injection of some sort, and it requires a fuel pump to supply the system, the fuel pump is of course electrical, and so being......
just hide a cut off switch into the + lead of the fuel pump (s)....and bury that kill switch somewhere hidden .....rather difficult to find, but decently convenient for the driver to control/adtivate the pump when starting....
now I may use a pushbutton, with a self latching relay wired in.....bury it in the door jamb, for instance, where you can make it latch into the run position, IE run power to the fuel pump so that it can run when the computer says so, when the driver starts the car......
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