Tail/Brake lights

I seem to braking right rear brake tail lamp bulbs.  I double checked my 
rewiring and it seems OK.  I'm wondering if I'm using the wrong bulb.  I 
cant read the other one for a replacement number.  I have a 2057 in there 
now but what is the correct bulb?  The last one was new and the brake 
filament separated.  I'm about to pull out the current failed one to see 
whats up.

Phil Nase
http://home.ptd.net/~nase