A straight key must have a stereo plug to function correctly in a K2. There are two ways to wire depending upon preference. 1. Wire as a plain straight key and select hand key in the menu. 2. Place a pair of diodes in the wiring and either had or auto will function correctly. Proper wiring is well explained in the manual. It is easier to describe with pictures so I will not try in email. Good Luck, Fran