Good to go. The pigtail black wire separated from the black/hot wire in the AC box. I used new wire nuts, versus the old ones yesterday. It is a tight fit for six solid #12 wires and wire nuts, in that small space. The unit has stranded wire. If I was to do it again, I would use stranded wire for the pigtails. I didn't because the wires from the breaker were solid.
Remote works as advertised. As a previous poster showed, you can control the unit from the panel. The lowest temp for the AC was 60 degrees, and it was colder than that in there this morning, so have to wait until later to check out the cooling capability. Low profile on the roof, and also inside. Being 6'4", I am happy with that. I will post later on the cooling capability. Thank you all for your help.