On my 07’ Marquis, it is located inside the left side switch cluster just to the left of the pilot seat. As of know, there are none available. Rick Youngblood was the go to, but last I heard, all of his stock is gone. I have replaced mine twice, so knock on wood, it keeps working. You can get the Cruise Control to work if you cycle the on/off switch 3 times, but the Collision Avoidance System will not work. Not the news you wanted to hear, but at least the CC will still operate. Good luck!