FAQ What is the difference between the CX-5 and CX-7 rear panels? The CX-7 rear panel includes two additional channels compared to the CX-5.Who should install external wiring to connectors marked with the icon? Installation should be done by a qualified person or the use of ready-made leads or cords is recommended.Where can I find the rear panel overview for the CX-5 model? The rear panel overview for the CX-5 model is shown on page 2-6 of the official manual.