How can I test fuel pump after removal

[bigredscowboy]

1992 X 2-door 2wd:
Checked all three relays and fuses, which are good. When I turn the key on I get 2 seconds of power to the inertia switch and the red wire on the fuel pump. No whirling/charging. Is there anything it could be other than a bad fuel pump?

I only ask bc I picked one up at a junkyard to confirm that it was in fact the fuel pump before spending a bill on a new one, and it didn't work either (i even cleaned this one up). I got a warranty at junkyard so I can go get another one but I'd like to check it in the parking lot before leaving if possible. Can I just hook the black and red wires up to leads on the battery or do I also need to do something with the other two wires? What can I expect from a good pump?

 

[something9000]

well if you can get to the connector that the fuel pump is connected to and just plug in the replacement and turn the key it should wiz for the 2 seconds. I assume you know where that connector is. if it doesnt perhaps the harness got damaged somewhere along the line.

 

[bigredscowboy]

yeah, i was looking for a way to bench test at the yard. I found a new looking pump at the yard and hooked battery leads up to the red and black connectors at the pump and got a whirl. Came home and plugged it in and all was well.

Also realized that the other two wires are for the fuel gauge.

 

[ld50]

I know you figured it out but....
For future reference here is a pic showing the pump power connections 12v +&- for bench testing.

1st Gen verified