new fuel pump on my 91 chevy 1500. but still, the pump wont make that whining noise.?

CesarMoreno

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I've changed the fuel pump relay and nothing. Changed pump and strainer and still it won't make a sound. There is one cable over by left side of engine disconnected buy I'm not sure where it goes (stupid I know) anybody know what could be wrong? A wiring digram would help alot too. Thanks
 
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