I'm not sure this is the same model you have, but it's the only one Charbroil now makes. In any case, most vertical charcoal smokers work the same way.
You can get a free PDF manual at Char-Broil,com and you can also talk to other users at http://sizzleonthegrill.com/user-forums/ and I bet you get lot's of help there.
It appears the thermostat and power cord are one unit on your smoker. The part number is 29001299 and can be purchased at the following link. I hope this helps.
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http://www.charbroil.com/Store/ReplacementParts.aspx