Thanks for the replies.
The problem started before the wings were removed, so I don't think it's a case of incorrect wire connections. As you suggest Milligoon, it could be down to the stalk and I was going to have a look at this. However as I understand the wiring loom is BMW (E39) I thought I'd have a quick search on the internet so see if this was an E39 issue. That's when I found read about the Light Control Module, hence my question as to whether one is fitted on the Aero?
Cheers