1999 A6 2.5tdi saloon. Lights on warning not working, neither are the door end and door bottom lights when door open. Keep leaving lights on!!
Have checked power at the connector in the door and get 11 volts between the purple and red and earth, but no pwer at the two lights.
I think the buzzer is activated by the door latch (seems to be the case on my wifes 2.5tdi Avant) but the wiring disappears into a moulded casing.

Any ideas??