MSD Ignition Controls are easy to install, but we also offer several direct plug-in Harnesses for late model vehicles! The Harnesses plug directly into your factory coil and harness then four color coded wires plug into the corresponding wires of the MSD.
The Harness, PN 7789, allows a user to use their existing Programmable-7 Harness to install the Power Grid System with minimal changes. The harness is designed to be a direct plug-in for all existing wires, but will need two new wires run if the user desires the two new inputs of the Power Grid.BrandMSDEmission Code5Part Number7789..
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