u/Happypoofysquirrel

93 r33 sedan

I've had the fuel pump directly wired to the battery, working for years and suddenly the relay won't trigger. Grounding the fuel pump, relay and gray wire that goes to the fuel pump to the chassis. Positive to the relay. Using the blue wire at the pump to trigger the relay. If I send 12 volts directly to the blue wire the fuel pump comes on. From the car I'm getting less than 1 volt on the blue wire. At the fpcm orange wire I'm only getting 11 volts. All fuses and relays working, fully charged battery with correct voltage.

I've tried bridging the black and gray wire at the fpcm. bridging orange to Blue at the fpcm and still less than 1 volt at the blue wire by the pump. fcpm plugged in, unplugged. no luck

Any thoughts?