Wurlitzer 4050
The Wurlitzer 4050 is a solid state transistor divider organ produced in 1962. It has 13 bass pedals and two manuals.
The Wurlitzer 4050 shared similarities with the Wurlitzer 4040, and some documents can be found on the 4040 page.
Part number 503683 is a set of instructions for setting up a new Wurlitzer 4040, 4040W, 4050 or 4050W organ, including how to remove packaging materials and best practices for moving the organ. View it as a PDF here.
The technical drawings for the 4050 that we currently have scanned include:
508491 (Switch plate and contact wire for the 4050)

