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**kev2809** · 08-24-2022, 02:55 PM

ok no relay in, there is no power. with the relay in and key forward, all the fuse terminals have power. I then turned the key off and I probed them all with no fuses and only 1 pink has power... according to my crappy paper drawing it is the pcm wire (top corner opposite of the fuel pump relay)

according to lt1swap that would be pin 19 and 75 on the blue connector which is labeled..

"Pin 19 and 75 - Pink - 12v+ KEY Power Source to PCM. Hot when Key is in the ON and CRANK positions."

mine seems to be hot all the time, even with the key off

08-24-2022, 02:55 PM	#30
kev2809 low n' slo Join Date: Mar 2009 Location: rosenberg, texas Posts: 5,194	Re: No power to the fuel pump ok no relay in, there is no power. with the relay in and key forward, all the fuse terminals have power. I then turned the key off and I probed them all with no fuses and only 1 pink has power... according to my crappy paper drawing it is the pcm wire (top corner opposite of the fuel pump relay) according to lt1swap that would be pin 19 and 75 on the blue connector which is labeled.. "Pin 19 and 75 - Pink - 12v+ KEY Power Source to PCM. Hot when Key is in the ON and CRANK positions." mine seems to be hot all the time, even with the key off __________________ 67 1/2 ton Suburban - Project DRGNWGN. Build thread -_--_--_ _________ _--_-_ -/____\|__\|__\__ ,.,,,.,.,,.,\|_O _______ O_]