Hi I want to get a service manual for my 1984 300SD. Any suggestions? Please do not even mention chiltons.

Keep your eye on Ebay for a used MB set.

I have found one source for legal W126 re-prints, and they are selling you the CD + contracting to print one hard copy for you, S&H may be extra..
IMO: it is cheaper to buy the CD and print it yourself..

Mercedes-Benz 280 S, 280 SE, 300 SD, 450 SE, 450 SEL 1973-1980 Repair Manual
$47.00
http://www.mercedesmanuals.com/Mercedes_Benz_W_116_Shop_Manual_p/w116.htm

Mercedes W126 Chassis Print on Demand Paper Manual
$379.00
http://www.mercedesmanuals.com/Mercedes_W126_Chassis_Print_on_Demand_Paper_Manual_p/w126print.htm

TOTAL = $426.00

http://safemanuals.com/

The linked website has been forced to remove all MB content due to copyright infringement.

Another example of why we have this rule:

6. Posting links, offers, or requests for stolen vehicles, parts, or any copyrighted material is prohibited. Requests for VIN lookups are not permitted. Requests for Carfax reports are not permitted. These threads will be edited or deleted.

Quick question on your manuals, it wouldn't happen to contain a wiring diagram of some sort that involves the power windows would it? because that is what irks me about chilton (plus a few other things)

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In the Garage:
'84 300SD, 85K "The Princess"
2011 BMW 328I XDrive, DD