I have managed to do it after more hours than I'm prepared to admit:
I used the guide from Sergey's link. In IT's first post pin 2 is not a gearbox ECU pin but a ground connection.
I used a new old stock clock spring (notice the in tact pull tag:
MFSW Relay mounting location(618):
Bits of add on wiring with additional fuse holders (will label these when i get a label printer)
And yes, the interior was vacuumed after.