BMW: 85 318i brake light question, plastic pin, turn signals

Question
i noticed my "Brake" light started to flash at me, so i had a friend see if my brake lights worked and they do not. i have running lights, and turn signals. and im not familar with BMW so im thinking the sensor is bad but where is it located on this pedal and approx how much woulda new one cost?

Answer
Jeremy,
 The light switch is located on the brake pedal.  Look up under the dash, and you will see a little plastic pin that gets pushed in when you press the brakes.  This is probably bad (common).

 It shouldn't be much for a switch, check these places out

 www.bavauto.com
 www.pelicanparts.com

 Hope this helps,
 Josh