Thank you for that, I knew it wouldn't be simple.
If there are any who knows their sterio's I would really appreciate your imput.
What I want to do is fit a radio / CD unit to one off my bikes (HD tourer) It came with the wiring harness and switch gear on the handlebars (for volume and station search)
HD want over £1K for a crap system, but there is a firm in the states doing Sony upgrades (CDX GT400) or as on my bike the complete system, including a water proof cover, water proof speakers etc.
I could buy a unit here and ship it over but that will cost about £100 in shipping so if I could avoid it I will.
Everyone in the fitting business says they don't know, I think all you need is the right plug that tranlates what the handlebars are saying and convert that into Sony speak. Does this make any sence.
Andrew