My shut-off solenoid is a Peter Paul (yep, that's the company and they're a good one) PN 54KK8XGM. It a 12 VDC normally OPEN so if it fails it shuts the engine off. In my case, the rear-mounted power shut off switch (you've probably seen them on race cars) has to make the engine stop - the sanctioning body requires it.

I plan to use the engine vacuum pump but I have an electric pump from a late-model S-10/Blazer if the engine pump doesn't do the job.

Options!

Dan