Product review (4 stars): My thanks to other reviewers -- definitely worth a try...
I thought compressor burnt out by extended half power event but actual failure was in start device attached. Only problem was to determine which unlabelled compressor terminals to use. The instructions referred me to  useless Kitchenaid diagram which labelled only the broken device terminals, not the compressor itself (scheme is to remove broken device and attach new Start Kit directly to compressor). I don't know how the installation instructions might have been improved but my success required a measure of informed good luck to say the least (the three terminals form a V where the tips are closer than the point, I chose the "point" as common). This reduced the odds from 1/9 to 1/2...

BTW: my old device was well and truly "blown" into bits and pieces so that internals were not obvious. Yours might be more readily traced, thus to vastly improve your odds of success.

Risk was $12 against $1400 replacement already on order so I took the chance. Happy guy...