Just bought a "rebuilt" climate control pushbutton module from ebay as all the stickies on mine were worn off or missing. Now that it is in the AC compressor does not click on anymore

. Anyone know the best way to check if it is this replaced control switch module that is causing the compressor not to kick in? Isn't there a place where I can ground a connector on the compressor to make sure it's ok? Somewhere I saw mentioned there is a connector you can short on the drier to do this?