Guys, I am experiencing the red brake warning light on the dash. It has been intermittent for a while but now is on full time. I have read in some of the threads that this is a common issue and some have had success with replacing the master cylinder w/switch. I would like to go this route but I am unsure of the exact Mopar part #. Several different part #'s have been listed here on the forum. My truck is a 2006 Quad Cab w/ 20" wheels ( I include this because I have seen this is part listings for the master cylinder). Can someone point me in the right direction. Much appreciated!