I found that switch hidden under the carpet. On the floor, next to the brake pedal... Any idea? Image Unavailable, Please Login
Previous owner named James Bond? (don't sit in the passenger seat when the button is pushed) Maybe flash-to-pass or high/low beam, if he column switch is bad? Sort of a "manual" transmission kick-down (if you car is an Automatic)? Might just have to trace it.
I had a button in a similar location on a UK 1973 Ford Escort which operated the windscreen washers! Quite fun to impress passengers by cleaning the windscreen without touching anything by hand... Jonathan