grokit, not sure you realize XLR connections are for low voltage DC use only, if you try to run 110v AC through the unprotected XLR connector you will electrocute yourself! We have seen you post this idea several times, thought you were joking at first, but now not sure if it is a good idea to keep posting ideas like this on public forums where others will read this and take it seriously.
We are not the designers, but it is still an XLR connector, there are a vast array of pin outs anywhere from 2 to 7 pins. See the often sourced Wiki for more info
http://en.wikipedia.org/wiki/XLR_connector
PV