Switch 14-31-271-02 subs to part # XXXXX
It appears the 'new' part # XXXXX XXXXX as well, but if you give me a minute, I will see if I can find a source for it for you.
Well, unfortunately even using the more recent part #, I am unable to find a source for the official part.
The good news however, in looking at the picture is that is appears to be a common 3 wire rocker switch.
Although you may not be readily able to find one in the exact same color, you should be able to check on a search engine for an electrical supply house close to you that would have a switch that will fit the space and function. (probably in black however)
One of those wires is the input, and the other two are output. One output makes the unit go up, the other down. The switch is just directing the power where to go. Think of it as a railroad splitting at a Y and going left or right.
You might consider trying your local radio shack. I see they have several similar switches listed on their website which could work.
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