alshookup

My old security light control box (Racal Guardall RLC1) has packed up after many years of use. It appears this Company no longer exists so I contacted Security Warehouse for advice. They told me that if it is a single zone system (I have 6 lights and four PIRs outside) I will need a GJD005 Sapphire Mk3 control box. I duly bought one. However, when I eventually got an electrician to call he told me the wiring wasn't compatible as the old control box only had one output feed and the new one has more. As I know next to nothing about this issue, is there anyone who can give me advice and if so, in simple terms please?