Where is the start interrupt relay ;located? Is in the fuse/relay in engine comp

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Start relay OK, Key switch OK, starter motor functions, if I jump starter relay,, range switch on trans OK, the only break in the line between key start & start motor relay is the start interrupt relay that I cannot find location to disable and then start car Now all dash ;lights come nomally, but turn to start and no reaction except anti theft light on dash blinks when attempting to start