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Old 08-21-2011, 06:07 PM   #1
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What is up with old thermostat wiring?


Newbie here. Trying to upgrade to a programmable thermostat, but the old model (Honeywell T834C1137) has a mercury bubble and the three visible wires (yellow, red, and white) don't seem to match up to any letters at all. (Y, R, G, etc.)

I thought this would be a quick no-brainer project for even low-maintenance me but now I'm not so sure.
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Old 08-21-2011, 07:07 PM   #2
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What is up with old thermostat wiring?


Take it off the wall and look at the back.

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Old 08-21-2011, 07:40 PM   #3
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What is up with old thermostat wiring?


Quote:
Originally Posted by Marty S. View Post
Take it off the wall and look at the back.
Yep, the wires your looking for are connected on the back of that stat.
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Old 08-21-2011, 08:49 PM   #4
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What is up with old thermostat wiring?


That did the trick! New thermostat is now connected. Thanks so much!
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