Need help with brake light on 1991 Mazda 323

I have one brake light not working, bulb is brand new, electrical looks fine, what could be the problem?

by in Rogue River, OR on January 13, 2011
2 answers 1 comment
ANSWER by , January 13, 2011
used a test light check for juice at the socket of the bulb, make sure you have a good ground.
COMMENT by , January 13, 2011
ground is good, and juice is going to all but one bulb?
ANSWER by , June 21, 2013
Check and clean the soldered contacts and the body ground of your bulb socket. Make sure the contacts are touching with the bulb.