Photos. We need to see whats going off before we can advise further. Some people simply cannot write out descriptions like this. You are one such person I'm afraid. Dont take it personally. Can we have a photo of the switch back, the cables you're trying to connect, and the new light fittings, preferably showing how you are connecting them.
You can upload photos onto this site when you post a reply, there is a link to "upload new images".
You can upload photos onto this site when you post a reply, there is a link to "upload new images".