Brake lights and turn signal switch

take a test light and put into one of the two wires in the brake light switch. 1 is constant hot, 1 is switched on when you press the pedal. if the non constant hot does not light up when you press the pedal, bad switch. if you don't have a test light, take a short piece of wire, jumper the 2 wires at the brake switch and if the brake lights come on, bad switch.