Amplifier integration interface for General Motors vehicles

Part: AOEM-GM21A Amp up your listening pleasure, easily add aftermarket amplification to your 1998 - 2002 General Motors factory radio. OEM-1 with a vehicle-specific harness plugs into the vehicle's wiring and offers a 4 channel RCA audio output for adding aftermarket amplification. Provides full range audio output 20-20,000Hz; the volume of the factory radio controls level. Plug in installation retains factory wiring integrity Linear 20-20,000Hz sound reproduction based on an input signal 4 channel RCA output Amplifier turn-on trigger wire Transformer isolated for optimal sound and performance.