Okay, this may be really basic, but for some of you it may just be
what you were looking for. Here is the basic wiring diagram for a
standard 3 pin XLR connector, used in audio for mics, playback machines,
intercom, etc.
Cable designed for being cut into standard mic cables may have 2
pairs of wire and a shield around the outside, in that case pair the
colors together and make sure they go to the same pin number on each
end. The surrounding shield should be soldered to pin 1. Balanced
audio cable designed for installs usually has a black, white, and ground
wire. The uninsulated ground wire should go to pin 1, the red wire to
pin 2, and the black wire to pin 3.
-Source (http://www.toffer.com)
-Source (http://www.toffer.com)
