Wiring on '87 In-Tank Pump - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jimbo0076 · 09-10-2013, 11:03 PM

Im trying to figure out the wiring on a '87 in tank fuel pump. There are 3 simple wires with the black one being the ground and it has one weatherpack plug. I know that the wires are one for the sending unit and the other for power to the pump but I do not know which is which. There is a purple and a gray wire and I just need to know which is which before I do some re-wiring and such. Thanks a lot

Desert1957 · 09-11-2013, 01:02 AM

Dont know if you have dual tanks , Is this what you want?

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Desert

Jimbo0076 · 09-11-2013, 10:33 AM

Well its close but it doesnt tell me which wire does what. Its not dual tanks just a single 20 gallon tank on the drivers side. What Ive done is on my 84 GMC I put Howell TBI fuel injection on the truck and Ive put a tank and pump assembly from a 87 truck on it and wiring it up so the pump and all will be in the tank and not have to run a inline fuel pump.

foamypirate · 09-11-2013, 03:01 PM

Purple or Pink are for sender, Gray or Brown are for 12V+. Colors are dependent on which side the tank is on.

gafiredog · 09-11-2013, 08:04 PM

on my 87 crewcab, the pink one is the sender, grey one is the electric fuel pump.

Jimbo0076 · 09-11-2013, 11:31 PM

Awesome,thanks for the info I got mine all put together and wired up this evening. Thanks for the helpful info

09-10-2013, 11:03 PM	#1
Jimbo0076 Registered User Join Date: Jun 2008 Location: Northeast Alabama Posts: 62	Wiring on '87 In-Tank Pump Im trying to figure out the wiring on a '87 in tank fuel pump. There are 3 simple wires with the black one being the ground and it has one weatherpack plug. I know that the wires are one for the sending unit and the other for power to the pump but I do not know which is which. There is a purple and a gray wire and I just need to know which is which before I do some re-wiring and such. Thanks a lot

09-11-2013, 01:02 AM	#2
Desert1957 Registered User Join Date: Apr 2009 Location: New Freedom Pa. Posts: 1,335	Re: Wiring on '87 In-Tank Pump Dont know if you have dual tanks , Is this what you want? Desert

09-11-2013, 10:33 AM	#3
Jimbo0076 Registered User Join Date: Jun 2008 Location: Northeast Alabama Posts: 62	Re: Wiring on '87 In-Tank Pump Well its close but it doesnt tell me which wire does what. Its not dual tanks just a single 20 gallon tank on the drivers side. What Ive done is on my 84 GMC I put Howell TBI fuel injection on the truck and Ive put a tank and pump assembly from a 87 truck on it and wiring it up so the pump and all will be in the tank and not have to run a inline fuel pump.

09-11-2013, 03:01 PM	#4
foamypirate Registered User Join Date: Apr 2009 Location: Pflugerville, TX Posts: 594	Re: Wiring on '87 In-Tank Pump Purple or Pink are for sender, Gray or Brown are for 12V+. Colors are dependent on which side the tank is on.

09-11-2013, 08:04 PM	#5
gafiredog Registered User Join Date: May 2008 Location: metro Atlanta, Ga. Posts: 196	Re: Wiring on '87 In-Tank Pump on my 87 crewcab, the pink one is the sender, grey one is the electric fuel pump. __________________ Art 1975 c-10 stepper 1978 single cab dually 1987 crewcab dually 1986 crewcab single wheel 1948 anglia- (the dixie twister super gas)

09-11-2013, 11:31 PM	#6
Jimbo0076 Registered User Join Date: Jun 2008 Location: Northeast Alabama Posts: 62	Re: Wiring on '87 In-Tank Pump Awesome,thanks for the info I got mine all put together and wired up this evening. Thanks for the helpful info



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