The Deere harness does consist of more than just wire and connectors. There are terminators, switches, etc. Mouser has all of the connections and I have some of them found. When do you need it by? If you're thinking like after planting season I can help you as we have a spare harness and I would be willing to help you. From what Ag Express charges there must be good money in harness making. $140 for two 3' harnesses with 10 pin metripack connectors on the end.

I just wish I could get AMP connectors from Mouser without having to order $1600 worth. Guess I'll need to find a different source for that one.