Circuit is pretty simple from my memory on (most); INERTIA SWITCH and FUEL PUMP RELAY CONTACTS, F.P. RELAY COIL controlled by IGN and/ or PCM. The FP RELAY should be replaced anytime PUMP replaced and any time pump= suspect? Usually in the FUSE/RELAY panel Under hood, forward of driver on (many) chassis; your mileage may vary? DO THE RELAY BEFORE DROPPING TANK, IF IF NO LUCK, THEN CHECK POWER TO/ FROM RELAY. GOOD LUCK
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THenne1713
2000 Conquest LE 6266, Class-C on 99-E450SD, 6.8, 2v, V-10
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