Mark, the connector that works for you, can you please trace the cables and see where its connected up - does it go to the sled? This is weird!

So far I've only been interested in the thin grey cable from the tuner. Mark, I'd really appreciate it if you could please double check whats happening with your PCATS tuner and whats connected where.

I'm going to bed now, thanks for all you help so far, back in a few hours!