Middle rear brake light works-however outside rear brake lights do not. Is it the flasher? AND, if so-where exactly isthe flasher located as it is NOT in the fuse box

This is not a flasher issue. First, has anyone checked the regular (left and right) brake light bulbs? Since there are 2 filaments in those bulbs (parking lamp and brake lamp filaments), you may just have 2 bad bulbs...

what year is it?

Penny,
you might be able to trouble shoot useing diagram from this website.
GOOD LUCK

http://www.autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/17/3d/a8/0900823d80173da8.jsp