Just said I'd post this up incase anyone has same problem I had last week.
Started the bird and it cut out straight away started it again and moved forward about a bike length she cut out .
All power was gone no dash lights nothing at all .
I checked the battery all ok fully charged good connection . Then the main fuse that was ok the connector wasn't melted .
After more rooting around the ignition wires the dash lite up .
So I started stripping it down removed the bottom of the ignition barrel one wire was totally corroded away the other two were perfect see pics . So trimmed it back and re soldered it back in all ok again just something to check if you loose power too.