armybaby, thanks for sharing that info. Could you provide more details on those two part numbers? Here is what I could find:
Autopartsonlineshop.com: Genuine Mitsubishi Attrage / Mirage Left Side Mirror 7632B801
Autopartsonlineshop.com: Genuine Mitsubishi Attrage / Mirage Right Side Mirror 7632B802
Neither of these refer to the heated mirror. It would be good to find the part number for the heated mirror.