Metra 70-2057 Amplifier Bypass Harness for GM MOST System

The Metra 70-2057 is a factory amplifier bypass harness designed for select 2014-2020 Chevrolet and GMC vehicles equipped with MOST (Media Oriented Systems Transport) amplifier systems. This harness simplifies the installation of aftermarket car stereos by allowing you to bypass the factory amplifier without cutting or splicing the original wiring.

Key Features:

• Plugs directly into the factory 21-pin MOST amplifier output connector
• 72 inches (6 feet) of wire length provides flexible routing options
• Color-coded and labeled wires for straightforward connections to aftermarket radios
• Includes connections for power, ground, speakers, and subwoofer outputs
• No cutting, splicing, or modification of factory wiring required
• Vehicle-specific design ensures proper fit and function

This bypass harness connects at the factory MOST amplifier location and runs to where your aftermarket radio or amplifier will be installed. The color-coded wiring on one end connects to your new stereo, while the vehicle-specific plug on the other end connects directly to the OEM amplifier harness for a clean, professional installation.