Hi just a quick update, I peeled back a lot of the loom tape to get an idea where the various wires went. In doing so I found a few suspect terminations and 2 wires that had detached themselves (1 on the map button and 1 to the fan switch?) I also found poor connections inside the 12 pin plug to the powerbox so I replaced it with a new one (it’s a molex mx150 plug from eBay) I tested the stator, pick up and coil etc and found them to be ok. I then attempted to start the bike and after a few kicks it fired and ran for a second before dying.
I kicked it a few more times and it backfired (hopefully because the air filter wasn’t fitted?) then it ran at idle for 30 seconds before cutting out. I will get a new plug and fresh fuel etc and try to restart it later this week. I will of course report back.