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Great Idea! Where's a good place to kill a 7.3 with one of those things?
Jas88 Suggested the ecu relay.
I was talking about a gas motor. For the 7.3L IDI, you will need to interrupt the main power wire to the injection pump.
On the 7.3L PS, I am not sure, I never owned one. It has an ECU, but not sure how power is controlled there. Subford will hopefully be along shortly to give us all the wiring diagrams.
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