At 09:39 PM 1/14/2013, John Reynolds wrote:
>On the mystery ground, I took my meter across the Brown wire at the
>under-seat rear heater (T4a) connector and ground behind the ECU -
>guess what I get resistance, so it is the same wire!  VW took the long route??

John, every ground on the bus should show continuity as they're all
connected to the chassis.  If you lift the ground wire and still get
continuity on it then you have indeed identified the ground.

Yours,
David