I’m at my wits end with this bike. Can someone please help.

I have a 1986 Yamaha xj700s Maxim x water cooled bike. I’m trying to replace my wiring harness but I don’t have the diagram. The air cooled versions are everywhere but the water cooled versions an extremely hard to find. And those who have them covet them and won’t help anyone out without a ludicrous price. All I want to do is ride my bike but I’m about to push it into a crusher. I don’t know enough to do this solo with any diagrams or manuals. I just want to ride but can’t cause this is all I’ve got. It’s getting to the point to where I just don’t know what to do anymore. I can’t afford any other bike and I’m just about to give up on it. If anyone could help I would truly appreciate it.