wiring harness help please

[REDCRO_REDNECK]

where Is the feul pump relay on a 1988 k5? what does it look like? any wire colors or number that can help thanks

need fast answer

 

[1985_K5_Silverado]

where Is the feul pump relay on a 1988 k5? what does it look like? any wire colors or number that can help thanks

need fast answer

AutoZone's web site says:

UNDER HOOD, PASSENGER SIDE, UPPER FIREWALL, MOUNTED ON RELAY BRACKET

Look here for wiring colors:

http://brochures.slosh.com/wiring/88%20-%2090%20R-V%20Chassis%201.pdf

http://brochures.slosh.com/wiring/88%20-%2090%20R-V%20Chassis%202.pdf

 

[REDCRO_REDNECK]

thanks for the help on this. strange thing on my 1987 k10 I un hooked that to see if it was and my truck started anyway. I will switch out the relays and see if I can get some miles on it.

where did you get the diagrams?
thanks again.

 

[1985_K5_Silverado]

where did you get the diagrams?

Just go to that http://brochures.slosh.com/ site and click the "wiring" link; he has a ton of them there for various years.

 

[REDCRO_REDNECK]

thanks for the help, truck runs now. it was a loose connection and the sock was bad.

 

[goldwing2000]

thanks for the help, truck runs now. it was a loose connection and the sock was bad.

I hate when my socks go bad.

 

[Russell]

The reason why it started is that there is a backup to the fuel pump relay in the form of an oil pressure switch on your engine. When it sees 10 PSI of oil pressure, it closes, and allows the engine to start