a premium OEM-style radio replacement harness designed to simplify aftermarket stereo installations in select General Motors vehicles. This plug-and-play harness allows installers to connect a new radio without cutting factory wiring, helping preserve the vehicle’s original electrical system while speeding up installation time. Features & Benefits Direct plug-and-play installation No cutting of factory wiring required Color-coded EIA standard wiring OEM-quality molded connectors Simplifies aftermarket radio installation Maintains factory wiring integrity Supports power and four-speaker connections Ideal for single-DIN and double-DIN stereo upgrades Professional installer preferred solution Specifications Product Type: Radio Wiring Harness Model: 70-1677-1 Harness Style: Factory radio replacement harness Connector Type: 12-pin GM connector Wiring Type: Standard EIA color-coded wires Installation Type: Plug-and-play Application: Aftermarket radio installation Vehicle Compatibility: Select GM vehicles 1973-1993 Vehicle Compatibility Compatible with many select GM vehicles including: Chevrolet GMC Buick Cadillac Oldsmobile Pontiac Common vehicle applications include: Chevy C10/C20/K10 trucks Chevrolet Camaro Chevrolet Monte Carlo Chevy S10 & Blazer GMC Jimmy & Sonoma Buick Regal Cadillac DeVille Pontiac Firebird And many additional GM applications from 1973-1993 Always verify vehicle compatibility before purchase. Installation Notes The 70-1677-1 plugs directly into the factory radio connectors on one side, while the opposite side uses color-coded wires that connect to the aftermarket radio harness. This allows for faster and cleaner installations without modifying the vehicle’s original wiring. Additional installation accessories such as: Dash kits Antenna adapters Steering wheel control interfaces may also be required depending on the vehicle and radio being installed
