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Stock fuel pump 12v wire

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Old Jun 1, 2006 | 12:52 AM
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Default Stock fuel pump 12v wire

I am using the stock tank and fuel pump for my conversion, however I need to find the 12v wire to test the pump.

There are the following wires on one conenctor/plug:
BLK
GRY/BLK
BLK/WHT
GRY
GRN/BLK
PUR
ORG

Then there's the following on the other plug/connector, I think this is for the Evap canister purge solenoid - Not using any emission so this should not be used:
RED
WHT

Also how would you connect a relay? I have one wire coming from the PCM that's labeled Fuel Pump RLY CTRL should this wire be connected to #86 or #85 on the Relay?
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Old Jun 1, 2006 | 07:37 AM
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to wire the fuel pump relay....you should have switched power going to #85, the Fuel Pump RLY CTRL from ECM going to #86 (as it is a ground signal), 12v going to #30, and the 12v output to Fuel Pump going to #87. #85 and #86 could be switched....it doesnt really matter which way the current flows...as long as one is switched power and one is ground from ECM.
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Old Jun 1, 2006 | 04:42 PM
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I found the wires that needed to test the fuel pump, there is a Grey wire which is 12v and a black ground wire, these when connected to the battery the pump will start running.

Originally Posted by Jhankinson
to wire the fuel pump relay....you should have switched power going to #85, the Fuel Pump RLY CTRL from ECM going to #86 (as it is a ground signal), 12v going to #30, and the 12v output to Fuel Pump going to #87. #85 and #86 could be switched....it doesnt really matter which way the current flows...as long as one is switched power and one is ground from ECM.
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Old Jun 1, 2006 | 11:50 PM
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For the fuel pump relay the PCM output is +12V not a ground. So you should wire the computer output to # 85 and # 86 to ground.
Attached Thumbnails Stock fuel pump 12v wire-98-f-pump.gif  
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Old Jun 2, 2006 | 07:00 AM
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ah crap....my mind was thinking right...but my words went out wrong...yes the ECM is 12v and the other side is ground. Thats what i was trying to get across when i said 85 and 86 can be either way as long as one is 12v and one is ground. thanks for catching my brain malfunction.
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