I contacted Acumen and they were very helpful and said the problem lay with the wiring from aprilia. I sent them the pages from the manual and basically he started to laugh as Aprilia have cocked it up and the wiring is bollocks, see below:
Hi Mark,
Thanks, but it's the wiring diagram that makes no sense. Look at page 116,
Item 15 which is the rear light. Then look at page 117 - the 'key' - at item
15 - it says it's a spark plug! 14, which is a rear indicator bulb, shows as
a spark plug, and 16, also a rear indicator, shows it as a coil. One of the
funniest ones is Item 42 on page 116, it's even marked as THROTTLE, yet on
the key shows as a Clutch Switch.
I just daren't trust anything on this wiring diagram which is why we have
never done a listing for it.
I'll try Aprilia again, but we've had no luck so far! Sorry for the bad
news.
David
So if anyone knows the wiring then please let us know, we can then pass it on to acumen who can then release it.
Cheers