Odds are its the brake switch. It's dirt cheap, so after checking the obvious (FUSES!), replace the brake switch with a new one (under $10) and you shoudl be good to go.
Warning: You might not have brake lights at the current time -- if not, you KNOW it's the brake switch.
SOLD - 2004 TSX, PWP on Ebony, 6MT, #00032. 2006 short block put in at 92,000km --> warranties are a good thing!.
Hondata, Tein, Koni, Injen, Unorthodox Racing, Comptech, Powerstop, FLP Maven, Japspeed.
NOW - 2014 Kia Optima SX-T turbo fun family hauler.