I have a centrifuge that uses a small air pump to push the oil up to the fitting going through the oil fill cap. I also have a edge juice that has a turbo cool down timer i have set at 300. I have the pump set to key on power from inside on the aux circuit. That is dead when the cood down is working with the key off. I was thinking i could move the power which energizes a relay for the pump to come off the alt but am unsure if the alt has a dc power signal that is only active when the eng is running so it will turn off the pump after the eng stops turning but stay on with the key off and end running so the centrifuge will continue workng while it is cooling down.Thanks, Curt

Hook it up here this is the start / run fuses of the power distribution. (Cab fuses)

Thanks Mike, I was unsure how the edge keeps things running with the key off. I would think you are saying fuse 9 fuel pump correct?

Fuse 9, 11, 17, or 19...

i was thinking I would stay away from any modules pwr just in case. I might see if i can grab powr off that relay under hood pwr dist center. Thanks for the circuit diagram.

No you can't all the fuses under the hood are live 24/7 so there is no way to shut it off... That why I told you about the fuses in the cab that are key switch active.

LT GRN/ BLK to 89 or is it 86 fuel pump relay located in the under hood power dist center ? no?

For gasoline engine not diesel. :rolleyes:ECM controls the Fuel pump relay for the VP44.

yea i saw that but i thought it might be a empty socket with the something still there to connect to but they are empty.... Of course