This exact, high-quality, reproduction of the original, 1969 wiring system includes multicolored wires with metal pins; a wiring harness; a turn signal-canceling cam, which automatically turns off your signal after you make your turn, and a built-in horn switch. This wiring system is a direct-fit replacement, which is easy to install on all 1968 Mustangs with a fixed steering column (non-tilt). Simply remove your faulty, stock turn signal switch wiring system and replace it in your factory plug with this brand-new switch. Note: This Turn Signal Switch has 12 wires while most factory cars have a 10-pin connection. The additional 2 wires are for Shelbys, T-birds, and Cougars with sequential lights. The 10 standard wire colors match up to the Mustang. The 2 additional wires can be taped up and will not be used in most applications.