MSD Ignition LS1 LS6 Timing & Rev Control - Build An Ignition Curve
The GM Weatherpak connector that plugs into each of the two coil packs mounted on the valve covers. All you have to remember is that the 1-3-5-7 connector goes to the driver-side coil pack and the 2-4-6-8 connector is for the passenger-side coil pack. The MSD harness even has a tag to help you. View Related Article