PAC AP4-FD21 Advanced Amplifier Interface for Ford Instruction Manual
The PAC AP4-FD21 is an advanced amplifier interface for Ford vehicles that provides a 6-channel pre-amp output for aftermarket audio equipment. This module retains all audio from factory features such as Bluetooth, SYNC, and parking sensor chimes. It also delivers a variable 5v RMS pre-amp output with fading, balance, equalization, and level control capabilities. Check compatibility with a Sony badge on the door speakers, center speaker or factory sub-woofer.