Regal454

Just wired up the Holley HP EFI system. When I connect the battery posts to the terminals, I can hear the fuel injectors firing. This is with the ignition key off. What is causing this?


Car: 1969 Camaro
Motor: 2009 LY6 6.0 58X reluctor wheel
Cam: Ultradyne 223/230 VVT delete with LS3 Cam cover and 4x 3 bolt cam
Intake: Stock LS3 with stock injectors pulled off a 2011 Camaro w/LS3 MAP
Throttle Body: Edelbrock 90mm DBC
FEAD: C5

I am using the Holley LS2 HP EFI part number 550-603

I hooked up the Holley harness as follows:

Red wire: to battery
Red/white 18ga wire: 12v ign switched at fuse block
Black 18 ga wire: chassis ground
Green wire: fuel pump relay
Computer power harness: POS and Neg wired to battery
Blue/white wire: not hoo

I am not sure why the injectors are firing? Am I missing something obvious? Any with experience with the Holley EFI systems that could help would be greatly appreciated. As far as I can tell everything is wired per the diagram provided in the CD.

Gray86hatch

iTrader: (83)

try disconecting the switched power. hook the main power wires up. i would also unplug the main harness. at that point hook up the switched power. hook the laptop up and load a global folder.

Tim