I need some help with my xtrons unit TD713G.
1.I need some more information regarding the connection of the reverse camera and an external free view tv digital tunner

2.0The testing show that the xtrons is not working with ipod nano gen 5 and 6 and despite the fact that it read the menu and files the audio is not working

 

Please connect reverse camera's power cable to your car's rear lamp, and connect its video output to TD713G's Back Video In cable. Besides, TD713G has a rear view control wire, which should be connected to the positive pole of rear lamp. Then when you power up the rear lamp, TD713G's screen will switch to CAMERA mode automatically.
Regarding the digital TV tuner, please connect its AV output cables to TD713G's AV input cables, then turn on the digital TV tuner and switch TD713G to AV mode.