Speedmaster GM Alternator Wiring Harness 10si to CS130 Conversion Plug PCE649.1002

The Speedmaster GM Alternator Wiring Harness (PCE649.1002) is a conversion plug designed to bridge older 10si-case alternators with modern CS130-style charging systems. This harness enables seamless electrical integration when upgrading or retrofitting GM alternators in engine conversions, restorations, or aftermarket performance builds.

This wiring harness eliminates the need for custom splicing and soldering by providing a factory-style plug connection between incompatible alternator generations. The conversion plug ensures reliable power delivery and ground continuity, making it an essential component for engine swaps, classic car restorations, or when modernizing charging systems on vintage GM platforms. Ideal for hot rodders, restorers, and DIY mechanics seeking a clean, trouble-free alternator upgrade without complex rewiring.

Key Features & Benefits

• 10si to CS130 Conversion: Bridges older 10si-case alternators with modern CS130-style electrical connectors.
• Direct Plug Connection: Factory-style plug eliminates custom splicing and ensures secure, reliable connections.
• Engine Swap Compatible: Designed for alternator upgrades during engine conversions and drivetrain swaps.
• Professional Installation Ready: Pre-assembled harness reduces labor time and installation complexity.

Specifications

Ideal Applications

• Engine swap and engine conversion wiring integration
• Classic car and hot rod alternator modernization
• GM vehicle charging system retrofit upgrades
• Aftermarket performance engine installation