Elec Short in 350SL: Where to Look?

[350SL4spd]

Hey guys,

I have a pretty major short in my 72 SL. With the ignition off I can watch the voltage in my battery drop: from 11.5v to 10.9v in about 30min.

Do these cars have any particular parts of the wiring that tend to go? What's a good place to start looking? Any advice on tracking it down?

I just put the entire interior back in the damn thing too...