When I took apart my 1983 R80 TIC I very carefully labelled every wire I disconnected and so far that tactic seems to have worked well. The only think is that there was one wire unlabelled and I cannot identify it in the wiring diagram in my Haynes manual. It's Brown/Black and comes from the main loom under the crossbar of the frame and terminates in a rubber covered spade connector. I appears to have something to do with the coils but as far as I can see they are wired up correctly. Pictures!