Holley Universal MPFI W/ Cop Main Harness

This harness provides a plug and play upgrade solution for those seeking to convert to Coil-On-Plug. Additionally we have pre-installed a Power Tap for easy access to 12v, 5v Reference, and Sensor Grounds.Features:

• Built in C-O-P Harness
• Additional 40 amp relay to power individual coils
• 20awq gauge wire or larger!
• Plug and play with 558-312 or 558-318 Smart Coil Sub Harnesses.
• Dual CANbus Connectors for multiple CAN devices