The whites are for the OXS heater, the green is the signal wire to the ECU.
If there is a short, take a look at the green wire's connector where it goes
to the oxygen sensor, I've seen that connector incorrectly replaced before,
by crimping both the sensor wire AND the shielding in the connector,
effectively shorting the signal.

Karl Mullendore
Westy Ventures
1987 Westfalia Syncro 1.9TD

----- Original Message -----

3 wires...2 white, one green with shielding...........What are they for?  I
need to trace for there seems to be a short in the signal to the
ecu...............I want to be sure i follow correct one..................

Adam P

81 Vanagon Westy (The Brick)
70 Single Cab "Whitey"
74 Beetle "Ol Yeller"
73 Transporter (STILL at paint shop)
1988 Vanagon Wolfsburg
Used Vanagon Parts for sale (mostly aircooled)