Did I state that wrong I guess?
In this case richappy knew what you meant but if you had given the same info just with different words then the conclusion would have been that the compressor is toast re: shorted out.
Open and closed circuits always confuse me. Throwing short circuit and infinite in there makes it worse. I always thought that a closed circuit let current thru, and a open circuit did not, correct?
You are correct so I am not sure why you are confused.
If you hold both meter leads apart, this is an obvious open circuit and no current will flow. Your meter will not give a resistance reading (infinite ohms).
Now if you short the meter leads together, this is an obvious short circuit and maximum current will flow. Your meter shows 0 ohms which is zero resistance to current flow.
Hopefully the new start device will do the trick. I will keep my fingers crossed.