Thanks for the replies.
I checked the Index of Crossfire Problems before I posted. Went back & checked twice - still can't find any articles on how to wire in a manual switch. Ditto for the link under "Spoiler Activation". A lot of discussion, but I couldn't find a link to how you would actually wire in the switch. Would be great if I have just missed a post where someone has gone before - As my ol pap said, "I'll copy a good idea in a heartbeat" !

Am I just not finding the right link?