This is my Alpine DVA 7996. I chose this model because it can play DVD's, MP3 and as an optical out for audio signal.
Install source unit
Because of the volume knob, it was not possible to close the flap, therefore the mounting panel was adopted.
Mounting panel
The mounting panel was adapted with fibreglass to fix the source unit. One can see the screws fixing the headunit to the car.
Source unit properly fused
New wires (10 mm2) were installed directly from the battery. The fuse of the source unit was replaced and a fuse holder was installed in the engine compartment.
Source unit - wiring
All wires to the headunit are protected with snakeskin.