My 79 Pace car has a problem, even when the car is turned off, the right turn signal is on ( not blinking just on ). I have the dash unplugged, the turn signal switch unplugged, the headlight switch out, the fog lights unplugged, BUT THE LIGHT IS ON. I have to disconnect the battery to turn it off. Car has 18K miles, is garaged kept. Hot wire at light is white/lt blue (turn signal wire ). Any ideas where the short could be? I'm running out of time to get ready for Mustang's 40th anniversary at Nashville in April. Please help. 
