HI Mate, i believe it to be pin 43 aswell, i'll PM you my email address.
i've been tracing pin43 and it seems to run down to the ABS unit in the engine bay and then on from there to the fuse box where it terminates as a grey plug, i also have a brown plug and red plug terminating into the same block, which then has a 2 pin plug in it which flows off to the OBD port.
what do these brown plug and red plug single pin cables correspond with.
And when VAG com is checking modules where are these modules e.g abs and Airbag.
cheers