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New ECU, Engine Wiring Harness, still no start. 700 1987

So the injectors need a constant 12v supply then. That makes sense. So somewhere the positive is not getting to my injectors. I tried linking the two big wires to Radio Supression Relay, and still no go. So is it possible that somewhere between the relay and the injectors there's a short? Or is there another relay or fuse or something that might be toast?
Thanks, John






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