cr2

have two pumps in the tank. ones connected to the factory harness the other was run off a holb switch. holb switch went bad almost causing huge problems while tunning. i want to run both pumps at all times now. i have a return system -8 line fuel system. where can i wire the second pump so that it comes on with key ignition???

Boosted Firehawk

iTrader: (11)

Run it str8 to the battery with a relay and have it come on only when the car turns on.

cr2

from the relay what should i hook the 12v refrance wire too? something that only comes on when i turn the key on??o

cr2

does it have to be from pcm and if so does anyone know witch wire it is from the pcm.

jtotheizzo

depends on where you want to mount the relay. If you mount it in the back grab the reference from the same wire that turns on the other pump. If you want to put the relay in the engine compartment then grab the reference at the fuel pump relay. and if you are looking for wire colors you might have to provide vehicle information FYI.