Brake lights

[dave houser <mgs4dave@tampabay.rr.com>]

Listers,
Wife traveling behind me noticed brake lights weren't coming on on the 
67BGT.
Checked bulbs, OK, checked grounds.OK. Took wires off brake switch, put 
em back, Voila! brake lights on, then no more. Took wires off switch 
again, ignition on again, brakes lit, then second stab, nothing again. 
Seems like the switch, right? Now, can I unscrew, hold finger over 
opening, replace with another switch without bleeding brakes??
TIA,
Dave Houser