My old 240D I've been rebuilding has the Bosch pencil glow plug conversion.
We will be trying to start the engine after the rebuild tomorrow if I can get the glow plugs to glow. It had the Bosch pencil glow plug conversion kit installed (not by me) since I last owned the car.
http://catalog.worldpac.com/buymb/022406/image.jsp?title=Glow%20Plug&url=http%3A//img.eautopartscatalog.com/live/F110188322BOS.JPG
Does anyone have the instruction sheet for this kit? I need to know the pinout and description for the harness/relay so I can troubleshoot this. The relay box is getting power, but it's not turning the relay on. There is also an external relay wired into the harness and a connection to the coolant switch on the head.