MSD 8877 Plug-In Ignition Wiring Harness for 1996-On GM Single Connector Coil

The MSD 8877 is a direct plug-in ignition wiring harness designed to simplify the installation of an MSD 6 Series ignition control box on 1996 and later GM vehicles equipped with a single-connector coil. This adapter harness eliminates the need for cutting or splicing into your factory wiring, making it one of the easiest ways to add MSD ignition performance to your late-model GM application.

The harness plugs directly into the factory coil and coil connector, while four color-coded wires connect to the corresponding wires on the MSD ignition box. The color-matched connections take the guesswork out of wiring, allowing most installations to be completed in under an hour.

Key Features:

• Direct plug-in harness with color-coded wires for easy identification
• No cutting or splicing required — fully preserves factory wiring
• Plugs in between the factory ignition coil and the factory coil connector
• Compatible with MSD 6 Series ignition control boxes
• Designed for 1996 and later GM vehicles with a 3-terminal single-connector coil
• Allows quick reversion to factory ignition if needed
• Sold individually
• Emissions Code 5 — legal for use on emissions-controlled and non-emissions-controlled vehicles
• Backed by MSD's Limited 1-Year Warranty

The MSD 8877 is the ideal solution for enthusiasts looking to add MSD ignition performance to their late-model GM vehicle without permanent wiring modifications. Compatible with a wide range of GM platforms including Camaro, Corvette, Firebird, C/K Pickups, Suburban, Express Vans, Escalade, and more.