There are two switches, and there must have been a bad batch of them
produced at one time.  I and my friend both had the switches go out on
new master cylinders within a month of installation.

If the red brake warning light on the dash is not going on when you
press the brakes, BOTH switches are bad.  They are cheap and easy to
replace as Jim indicates.

Listees, check your brake lights often!  It is better than getting rear
ended or being flipped the bird by passing drivers and not knowing why!

--
Stuart MacMillan
Manager, Case Program
800-909-8244 ext 208

Getting your share of the Net yet?
http://www.cobaltgroup.com
http://www.casedealer.com/demo
http://www.caseihdealer.com/demo