FCSS-1
Ford cellular surround sound T-harness for use with most Motorola, Nokia and other handsfree car-kits with mute wire.
This harness is used in conjunction with the phone mute switch feature on most 1999 and later model Ford radios. When the harness is installed it will, upon activation by an incoming or outgoing call, automatically mute the radio and play the call through the factory sound system. "PHONE or "CALL" will appear on the radios display.
New compatibility list