Hello all, a question for the brain trust. Can someone please explain the differences between the three types of serial interface boxes? I see two different part #'s in the silver metal boxes and a third in a plastic box. All three have the same wiring harness, cat5 jack and switches. do they all control the same lightbars? I have a Legend all LED including takedown alley lights and it has limited functionality on a silver box but fully functioning on a newer plastic box.