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How do I wire a thermostat, Simple Comfort2000, red blue white green wires

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Do you have the manual? I do. First link in a Google search... patriot-supply.com/files/icmsc2000_ag.pdf Page 9 – maple_shaft Dec 3 '12 at 18:06
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Did you label the wires before you removed them from the old thermostat? – The Evil Greebo Dec 3 '12 at 18:24
-1 because this question is incomplete and the product/model specific nature makes it highly localized and unlikely to help any future visitors. – BMitch♦ Dec 4 '12 at 1:09

closed as not a real question by Niall C., ChrisF♦ Dec 6 '12 at 21:14

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Is there an existing thermostat? There's not much standardization of the colors used, so you need to explicitly check them: if no existing working thermostat, check what they're connected to inside the furnace on the control board.

Once you figure it out, it's a very good idea to label the wires at your thermostat to avoid any future confusion.

The most common terminals/colors:

R - 24VAC power (usually red)
G - fan (usually green)
W - heating  (usually white)
Y - air conditioning (usually yellow) 
C - 24VAC common (usually black)

This page actually describes the wiring in a lot more detail than I can here: http://wiki.xtronics.com/index.php/Thermostat_signals_and_wiring

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