Your 5th picture down of the new ISO plug....there are 2 slightly different versions of that from Deere parts. Ran into that once when replacing one on an 8R vs on say like an 8x30 or 8x20. We grabbed the 8R and we needed the older "new" one. Looked dang near the same to me but that fixed it. I never did look to see what the difference was but you may want to check into that...might be different pins or something?