Attachement didn't work, but try this:
http://pg.photos.yahoo.com/ph/hneureiter/
detail?.dir=2ea5&.dnm=bb1dscd.jpg&.src=ph
That's the schematic for the non-electronic one found
after 76 and before 86. Cam and switches. The one with
the belt and the (for-real) circuit board is much different,
as is the dash switch that goes with it. I think it's
the ETM that has schematics (car) that show the harness
differences. It's minor, something like one extra connection
in the switch.
I considered just taking the motor out and making it a
manual antenna.
Don't do that. Our '76 SL had a manual (switch-operated)
antenna. What a PITA. Non-motorized is totally un-Benz-like.
That antenna ended up in the Ebola Fishtank (250C hardtop
convertible), and one of the cam-operated ones got retrofitted
to the SL. Lots of work, that. To fix yours will be at most
the same amount of effort as to cripple it back to manual only.
-- Jim
