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The inertia switch will not handle the amp load of the high output pumps being used now, it needs to be installed on the switch leg side of the fuel pump relay. I have no answer about if the PDM shuts off the fuel pump, but it ISN"T an inertia switch, and you can be in an accident and the engine continue to run. It's such a simple safety device to install, I see NO reason not to use it.
Last edited by rich grsc; 04-18-2026 at 09:33 AM.
Mrk III, 331 stroker, Borla stack injection, T5, 3:55 IRS, Power steering and brakes. Kleiner body & paint
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