The Metra WM-FD1 Stereo Wiring Harness is designed specifically for Ford, Lincoln, and Mercury vehicles from model years 1985 to 2012. This stereo adapter allows for easy installation of a new car stereo by providing a wiring harness that is compatible with these specific vehicle make and model years. Not a custom bundle or modified item, this wiring harness ensures a seamless integration of the new stereo system into the vehicle's existing wiring.