VW Turn Signal Switch - Aftermarket - Black - 1966-67 Beetle - Karmann Ghia

The VW Turn Signal Switch wiring is a very simple circuit, even with the 1966-67 Switches controlling the Headlight Relay.

ONE VERSION of the aftermarket turn signal switch wiring has:

Black Wire (with Blue Wire attached) : 49a OR "L" Terminal on Flasher Relay
Blue Wire (from Black wire) : Turn Signal Indicator in Speedometer (wire terminal end may need to be changed to a 1/4" terminal)

Black wire with White Stripe: Power to left turn signals (Black with White Stripe factory wires)
Black wire with Green Stripe: Power to right turn signals (Black with Green Stripe factory wires)
Brown wire: Ground Terminal on Body
Brown wire with White Stripe (cut off brown jumper wire - not used) : "S" Terminal on Headlight Relay

ANOTHER VERSION of the aftermarket turn signal switch wiring has:

Black with Red Stripe (with Red with Black attached) : 49a OR "L" Terminal on Flasher Relay
Attached Red with Black (from Black with Red wire) : Turn Signal Indicator in Speedometer (wire terminal end may need to be changed to a 1/4" terminal)

White with Red Stripe : Power to Left Turn Signals (Black with White Stripe factory wires)
Yellow with Red Stripe : Power to Right Turn Signals (Black with Green Stripe factory wires)
Brown wire (cut off brown jumper wire - not used) :  Ground Terminal on Body
Red :  "S" Terminal on Headlight Relay

The original factory colors for the wires are:

Black White Green Wire (with Blue Wire attached):
49a OR "L" Terminal on Flasher Relay

Blue jumper Wire (from Black Wire):
Turn Signal Indicator in speedometer

Black wire with White Stripe: Power to left turn signals
Black wire with Green Stripe: Power to right turn signals
Brown wire with Jumper: Ground Terminal on Body
Brown wire with White Stripe: "S" Terminal on Headlight Relay