Synchronized drivers:

I've searched my Bentley but I must be blind. I can't find any
description of the speedometer cable for a Syncro. I've found one
drawing on 39.30 which show the speedometer drive. But that is of little
help. What I need is details on how the cable is connected. Can anyone
point me in the right direction?

Thanks in advance
-Larry
'86 Syncro Westfalia