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My son’s truck is a 97 Ford Ranger with a fuel delivery problem. The pump has 4 wires- black, red, yellow, and green. When I measure voltage at the pump I get 12 volts at the yellow with the key on. When I hook power to the red and black the pump will run. I replaced the ignition; still no joy. My thoughts are to hold the key to the start side and see if I get power on the red post and to perhaps replace the key side of the ignition. I cannot find a fuse but did find a relay and traded one over with corresponding numbers, still nothing. Any ideas?
Thanks steve
Thanks steve
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