AEM's CD Dash Holley Plug & Play CAN bus Communication Harnesses (PN 30-2214 for Holley Dominator and HP, PN 30-2221 for Holley Sniper) eliminate the need to manually wire a CD-5 or CD-7 Carbon Digital Dash Display to a Holley EFI system. These (AEM PN 30-2214) harnesses are fully terminated and connect the CAN2 input on the CD Dash main harness to the CAN output on a Holley Dominator, HP or Sniper EFI harness. Because the Holley EFI system does not provide power from the CAN output, AEM recommends using its CD Power Cable (PN 30-2218, included in every CD Dash kit) to simplify power and ground connections. The CD Power Cable connects to the AEMnet connector on the CD Dash wiring harness and includes a pigtail connection with power and ground leads that make it easy to wire the dash for power when used with non-AEMnet equipped devices.