PAC AmpPRO AP4-FD21 Aftermarket Amplifier Interface Allows seamless addition of an amplifier in select 2012-up Ford vehicles

PAC AmpPRO AP4-FD21 Aftermarket Amplifier Interface Allows seamless addition of an amplifier in select 2012-up Ford vehicles   Your amp will sound better than the factory system You can make a less-than-ideal  factory system actually sound premium by upgrading the weak factory amplifier with a more powerful aftermarket amp. PAC's AmpPRO interface consists of a module and a vehicle-specific T-harness that make the job much easier. Now, you can install an amplifier of your own without losing any of your vehicle's factory audio features like warning chimes, navigation prompts, and Bluetooth functions.   Simple to install The package's T-harness plugs into the factory radio and vehicle harness. The small module fits behind the dash, converting your radio's speaker outputs into six preamp-level outputs ready for connection to your amp. The factory amplifier needs to be left connected in the vehicle. The factory radio controls, such as volume, balance, and fade, will work as