We are making progress with the old 1984 S3! Various niggles now fixed- I can now lock the back door and the heater works again (connection behind switch was loose). Latest query is on the glow plug or cold start warning light. Is it supposed to go out when the plugs are up to temp?I held mine for about a minute and it was still on. Also, any ideas why it is supposed top be a 6v bulb (according to the handbook). I have a 12v one in there currently. It seems to work.
Joe
Joe