I've been the proud owner of the JC Refrigeration conversion to the 12VDC Twin Compressor Mod since May of 2022. I went to their facility in Shipshewana, Indiana to have mine installed, instead of doing it myself. I have the skill set and ability to have done it myself, but old age and the thought of wrestling the fridge out of the cubby hole that it is in, then getting it over to the middle of the floor in the living area/kitchen area....by myself, made me decide to tow the trailer up there and let them do it. If you are fairly handy doing repair work type work, it's definitely doable, and I've read quite a few posts about guys doing it themselves.....forums...facebook grand design pages, etc.
So a little about the electrical draw....when both compressors are running, like it would be when you first turn it on to start cooling everything down, you're looking at around 12.6 amps of current......12VDC only of course. Since the conversion process changes both the cooling method (compressors instead of the absorption type cooling), there are actually two thermostats on the unit now. One of the compressors takes care of the fresh food section and has it's own thermostat, the other compressor takes care of the freezer and has it's own thermostat, so they can be set independently of each other, which also means that BOTH compressors are not necessarily running at the same time, and it will depend on what is actually needed for whichever section, the fridge or the freezer.
When I had mine done back in May 2022, and they were finished doing the install, they started up the unit and of course everything was at ambient temperature on startup....around 80°F. Within about 3 hrs, the fridge section was down to 34°F and the freezer section was at 2°. An hour or so later, those temperatures had dropped even more and the freezer was down to -2 or -3 degrees and the fresh food area was 31°. So I readjusted the two thermostats and really have not had to adjust them since then. Fridge section now stays around 36-38 degrees and the freezer stays right around zero to maybe 2 above zero. So far, it's been flawless for us
Here is what the back of it looks like....Oh, and please ignore the "dusty" looking photo....we were in the middle of heavy pollen season here in East TN....LOL