That's spot-on Vince. Thank you.
It made me wonder why I couldn't find the swich on my factory manual diagram, so I had another look and discovered that they have cut the diagram virtually in half and the part of the loom with the sss is on another page along with its own legend.
It appears to match the one you have posted up, but it's not in colour, nor in one piece as mentioned. The sss is number 16 on mine.
It's going to take a good hard study to see which cables I have to intercept on the SS harness to plug the switch into.
My trump card is a spare M900ie harness kindly given to me by Bitza..
