1982 300sd turbo traced elect. short to acc. fuse. my question is where is a good place to seperate the various circuts to find out which one is bad? thanks folks Bobco

At The Termination Point
 

Brother of The Benz, Bobco
To find where the short is in a stand of circuits, you go to the furtherist point of the wire.
Remove all of the bulbs and the fuse. Use your ohm/continuity meter and check the wires to ground. If all are ok replace the components and move on in the same manner to the electrical components,(blower motors, etc.) .
You will evidentually isolate the culpert.
Happy Trails Beep Beep from The Spiderman in Houston!!!