Pin1 is ground/return, Pin2 is signal "hot", Pin3 is signal "cold". Hope this helps, regards, Richard @ vantageaudio.com
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If you look carefully, you will see that the pins are numbered on the Neutrik connectors. There are actually four connections to be soldered on each connector. There is a tab with a small hole and this needs to be connected to pin 1. You can make a little jumper out of a piece of lead from a cap or resistor or attach part of the shield to this tab.
Thanks fellas. Yeah, I noticed that little tab, I figured it had some sort of purpose. Wonder why it doesn't come already attached to pin 1? Odd. The other challenge is the wire itself; the positive is obvious but it's impossible to tell which of the other two wires are which. A multimeter will come in handy. In any event, soldering some connectors doesn't take a whole lot of time or skill, and sure seems to save a LOT of money doing it yourself.
Ideally you should leave the tag to "float". Do not connect this to Pin1 especially of you have signal ground above chassis ground. If necessary, and this is system dependent, you can connect the tag to Pin1 via a small signal capacitor. You can also connect tag to tag in a four wire hook-up. Regards, Richard.