72 Demon playing the juice harp and brake light misery

Alrighty then. Turns out it was a bad connection at the fuse box. It would carry voltage as long as there was no load on the circuit. As soon as i applied a load the voltage disappeared. I used a bench power supply to power the circuit starting at the kick panel connector and backtracked to the switch connector, brake light switch and then fuse panel to find the problem. Figured i would post just in case anyone encounters a similar problem.