"~KJPRO~" KJPRO @ STARBAND.NET wrote in message

So suddenly everybodies unit only has 2 wires?

I don't think so Tim!

~kjpro~
BTW, you would be suprized at the people that can't program a VCR or Stat,
let alone hook either of them up correctly!

Same thing if you have more wires. You follow the instructions. Tens of
thousands of thermostats, many with multiple wires, are successfully changed
each year by plain old homeowners. I'm sure a few do screw up, but to make
a blanket statement that everyone should call a pro is plain silly.