Finding pinouts

[fuzzbox]

Anyone have some tricks for finding pinouts off modules?
input output are easier, but stuff like power +/-, 0v, ground.

eg. using a continuity meter touching the metal base of a transistor, checking the connector and finding a pin would indicate? ground? voltage?

sorry I haven't got all the lingo down.

 

[soundguy]

power is usually easy to find, often there are protection diodes on the power inputs, beyond that just find an opamp, get the data sheet for where the power is supposed to be and trace it back. Grounds are easy as well following the same principle, find what is referenced to ground and follow the bus.

dave