Fooling around under the dash installing the tach and speedo cables and a vent hose, we apparently dislodged the wire for the drivers side direction signal. The 4-way flasher switch works with or without the key and the right signals front and rear flash perfectly with key on. Both bulbs are fine and there never was any trouble prior to the fiddling around back there so the grounds were fine. The indicator light works fine for the right signal. I have the wiring diagram for the 1971 but it's hard to follow. It looks like the left signal wire connects to a terminal on the back of the flasher unit. Correct? Since my bad back won't allow me to lay across the seat, I'll need help in connecting the wire as it's hard to do reaching behind and under the dash working blind or with a mirror. Those are tiny terminals on the back of the flasher switch.