I just looked...both wires that go into one like you see in the pic go into the harness under the power distribution box and from there I'm not sure. I just used my BIL's Snap On scanner and pulled the following codes if I understood them right

4
1
636
332
538
536

So now I'm off to look those up

 

So I ran it down the road a bit ago from complete cold....probably in the low 20's here. Skipped in and out almost constantly until it warmed up then it barely did it.

 

Got it in my buddies garage Saturday night out of the cold to check things out. Noticed it would lock and unlock less when it reached running temp but still did it. Got it in and pulled the plug on the side of the trans. I found that it had a small amount of ATF in it. I cleaned it with brake clean, blew it out with air and made sure it was spotless. Put a little dielectric grease on it and put it together. Now it throws a hole mess of codes, will only start out if you put the selector in 2 then shift to D and the OD button no longer works.....white flag, I give up......I limped it to my buddies tranny shop last night.....After it kept throwing the code for the trans over temp sensor being bad, and now throwing a bad solenoid code I guess its time for a solenoid pack replacement.

 

I would think that the solenoid pack and transmission are OK.
What I think the problem is that you have bad wiring just as it goes into that plug.
I have seen this before, you have to take the back of the plug off and you will find that the wires are broke off as they go into the plug.
This happens from the heat of the exhaust. There is also a shield there to protect the plug from the heat but I have seen this shield missing also.

 

The shield was there....my hand is cut up all over the place as I'm sure you're familiar with how little working space there is. My tranny guy is super so I'm sure he'll figure it out. Only reason he didn't figure anything out when I had it down there 2 weeks ago is because I was pushing to get it back and it wouldn't do the lock/unlock for him....it was pretty hit and miss until I did the tune up which makes no sense. I never threw a CEL until I did a full tune up and now it throws the one for the TOT sensor everytime you drive it and also the EGR isn't opening. The truck is licensed over 9k pounds so where I'm located I don't have to deal with emissions so it may get deleted when I pull the manifolds to fix those leaks. Thought I was smart buying a 75k mile truck but didn't take into consideration of it sitting 6mo a year in storage can be hard on it mechanically.