some idea that line lock. ever thought of that.
it actually is a stoplight switch from the shape and size.
a friend of mine did 66 mustang brakes and he hated the factory setup at pedal. So if he had a ghydrauklic one he would have plumbed one in.
so unless someone tiook a stopswitch and found a way to make a line lock out of it, it's a non-working brakelight switch ~:-)

 

most definitely a line lock. went to a car show today and saw the same exact switch on a corvette and asked the owner if it was a line lock. he said yes.