Here is the icemaker itself.
And here is the pump and hose. It looks like the pump pumps the water up to that tube where it flows down into the icemaker(no pressure at this point, just gravity). The tube is the only part of the pump system that exists inside of the freezer, and it has no standing water.
Good to know it's 120v, now I can start testing without fear of damaging the unit. I was planning on drilling a hole for that tube near the top of the freezer, then mounting the icemaker just inside with a bucket of some sort below to catch the ice. The biggest concern I'm having is hurting the freezers deficiency by having this tube sticking out. I can silicone around the tube so no air gets out, but the area on the back of the tube where it connects to the hose is a lot thinner than the freezer wall. I could insulate over top of the hose outside of this hole and probably get the efficiency back up, but then I risk freezing the water in the hose.
Smitty, to answer your question in the other thread, I was planning to power the fridge off of deep cycles with an inverter. It's an ultra efficient standup model, so I think it should not use up a whole lot of power. The biggest x-factor is how much the hole I'm going to have to drill is going to hurt the efficiency. I guess I'll just have to see how it goes.
It's probably not worth the effort if the effort and the project itself were not fun. But I like complicated **** like this, so it's all good.