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Fuel Pump Wires?

Noodle

NAXJA Forum User
Location
Kansas
What are the 3 wires going to the fuel Pump? Ground, Fuel pump power, Sending unit? I checked voltage on between outside two wires with key on and it is 10.?? is that correct? I cant get it running and just put in a new pump from Autozone.
 
It actually has both, sometimes it will start and die as soon as I let off of the starter, other times it does not want to start. I have bypassed the ballast resistor. Any ideas?
 
The three wires are power, ground for the pump, and a feedback wire to the fuel gauge. Black is ground, of course. The heavy wire is 12-volt power, and the light gauge colored wire (which memory tells me was pink or lavander on the 88 I did awhile ago, but I don't really remember) is the fuel gauge wire.
 
I may be way off, but I changed the fuel pump in my '90 pulled the old one wired the new one back the same. It would turn but not pump. I pulled it back out stuck it in a bucket of gas, put jumper wires on it, it was come to find out runnin' backwards. Took it apart and switched the wires, it pumped just fine. Just a thought.
 
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