Join Date: Feb 2002
Location: N.W. Washington
hey dnult, i believe the actual brakelight switch is under the dash, a plunger switch, mounted to the brake pedal assembly (unless thats not what you meant). the wire attached to the sender on the master cyl is for the brake low pressure warning light in the gauge cluster. it should be a tan 18awg wire. i'm pretty sure thats how my 68 is, but i havn't worked on that area in some time. so if its how i recall it, that wire still shouldn't have smoked, even if it was a bad sender the light would just turn on in the dash. hmm, since that wire just completes the circuit when the sender closes, i can't imagine off hand why it would smoke when you hooked it back up. that may also be why it was unhooked to begin with. my first approach would be check voltage/resistance measurements as dnult stated, and just trace that wire all the way back, and check that switch on the parking brake, it should be the same circuit, and it could have gone to ground at the switch, due to a bad switch. do like dnult said and disc. the p brake switch, and test the wire hanging by the master cylinder, see if there is a change. maybe pick up an assembly manual with a wiring diagram to assist you. good luck with it!
1968 rs with an old school 354" SB2.2 pump gas motor.
Repetition does not transform a lie into a truth.
Franklin D. Roosevelt