@rogering according to the wire diagram on the 3 wire servo there should be black and yellow to cdi unit so this would be a live, a black should be earth put a fuse and then looks like brown is a remote earth
brown will be live
on yam wiring black is earth brown live
@Mightyman I know haha I just forgot as it's been a while 😂, I didn't replace the plates, I replaced one spring at a time and blasted loads brake cleaner I. Im pretty sure I did this once years ago but it soon sorted. I probably will change the plates in the near future.