2011 Ford F150 Radio PAC AmpPRO Advanced Amplifier Interface For Select Ford Vehicles With 8 Apsub Fd21 Manual CMBNT1AZ Zinc Bennett Trim Tab Anode - Anodes Direct The PAC AmpPRO SUB Advanced Amplifier Interface seamlessly integrates with the databus allowing for full control and optimum sound from a factory radio when adding aftermarket amplifiers. 2011-2019 FORD VEHICLES EQUIPPED WITH 8.4 SONY SYSTEM PLUG Play Upgrade For Adding A Aftermarket Sub Amp Integration with today’s advanced vehicle systems like databus-controlled amplifiers can be difficult, if not impossible. Upgrade solution for factory, fixed-level, databus-controlled sound systems Compatible with Ford F-150 2013 to 2017 and F-250/350/450/550 2013 to 2019, Compatible with Ford Focus 2012 to 2017, Fusion 2013 to 2016, Mustang 2019 to 2020, and Taurus 2013 to 2015 PAC ( APSUB-FD21 ) AMPPRO SUB ADVANCED AMPLIFIER INTERFACE FOR SELECT FORD VEHICLES 2011 - 2019 WITH SONY SYSTEMS AND 8.4 RADIO Add a subwoofer. Upgrade your sound and keep your Ford factory radio Quickly and seamlessly add an aftermarket amplifier , improve audio performance, and retain radio fit, finish, and features ADD