1972 beetle, ONLY left turn signal not working but 4 ways work Jun 06, 20161972 beetle, ONLY left turn signal not working but 4 ways work The turn signal switch or the wiring to it. Because the Hazards and the Turns share all the same wiring save for the Turn switch and wire from it to the Hazard Switch on the right side. VW Turn Signal Switches and Relays. - JBugs 141953517F VW Turn Signal Switch, Black: VW Bug 1966-67 VW Ghia 1966-67 The VW Turn Signal Switch wiring is a very simple circuit. even with the 66-67 Switches controlling the Headlight Relay.