Snooping around and I came across this:

www.instructables.com/id/DIY-heated-clothing/

The guy I think has the right idea but i think I'd do a little tinkering with the threading of the wire.
I might try it someday.
Hey, its cheaper then buying the heated gear!

Very cool.  I just read the DIY and looks great.  I sure wish I had that in AZ today.  My ride home was arount 55 deg, and lemme tell you, from 100 deg 2 weeks ago to this, I was pretty damn cold.  LOL.

sorry ColoradoFTR's....  hate to rub it in that i'm even riding at all... how much snow did you get today???  HAHAHAHA.