This adapter harness plugs directly into the factory coil connector on late model '96-and-up GM vehicles, with four color-coded leads that connect to the corresponding wires on an MSD 6-series ignition control for a clean, straightforward install.
Specifications:
- Category: Engine Wiring Harness
- Product Type: Harness
- Sub Category: Wire, Cable and Related Components
- Compatibility: MSD 6-Series ignitions to factory GM coil harness ('96-on)
- Part Number: 8877
FAQ
What does the MSD 8877 harness do?
It adapts the factory coil and harness connector on late model '96-on GM vehicles for use with an MSD 6-series ignition control.
How does it connect?
The harness plugs directly into the factory coil connector, and its four color-coded wires connect to the corresponding wires on the MSD ignition.
Is cutting or splicing required for installation?
No. It is a direct plug-in harness designed for a straightforward, color-coded installation.

