fuel pump relay

[Wendell]

does anyone know what the voltage is suppose to be in the dark green/white stripe wire coming from the pcm to the fuel pump relay?

90 s10 4.3l auto.

[EleV8ted]

is it the control side or the power side of the relay? the control side is pins 86 and 86 on the relay. the power side is 30 and 87/87a. i assume you know how a relay works. you should have 12 volts to both sides, one will just draw alot more amps to run the pump.

[EleV8ted]

i just read from the pcm, its only 12v. the other one is fused and goes directly off the battery.

[Wendell]

that what i thought too.

[sorj]

if it\'s pcm voltage, it should be around 5 volts. but I think you are right about the 12volts and the pcm conrols the ground (control circuit)