Main Power Harness for Avenger EFI, HP EFI, & Dominator EFI This is required if buying a separate Holley EFI Dominator or HP EFI ECU.
Holley EFI LS main harnesses have a MAP sensor connecter designed for use with a LS1/2 style MAP sensor. The 558??416 is an Adapter harness that allows for Holley LS2 Harness PN 558??103 to be used on LS3 engines, which has a different MAP sensor.
Crank/Cam Ign. Harness. Fully terminated harness. Connects to Holley 60??2 crank sensor and GM Cam??Sync Distributor AC Delco PN213??350 or eficonnection.com sync pulse distributor
Sealed USB Data Cable (Comes with ECU's)
j2A, j2B, j3, j4 Connector & Pin Kit ?? Contains connectors & pins, but no wiring. for Dominator EFI
GM 4L60/80E Transmission Harness ?? Complete terminated harness with j4 connector to operate GM electronic transmissions. for Dominator EFI