American International FWH694 Amplifier Integration Harness for 2003-2012 Ford/Lincoln/Mercury

The American International FWH694 is a premium amplifier integration T-harness specifically designed for 2003–2012 Ford, Lincoln, and Mercury vehicles equipped with a factory premium amplified sound system (including Audiophile, Shaker 500/1000, Mach 1000, factory subwoofer, and THX systems).
Unlike standard wiring harnesses, the FWH694 keeps the factory amplifier and all factory speakers (including door subs) fully active while providing clean, low-level RCA outputs for your new aftermarket head unit. It plugs inline between the factory radio harness and the OEM amp, delivering 4-channel RCA pre-outs (Front L/R + Rear L/R), a dedicated subwoofer RCA, and a remote turn-on lead — perfect when you want to retain the factory amp’s power but use a modern touchscreen radio with Apple CarPlay/Android Auto.