Does the reverse gear wire need to be hooked up to make the unit work. Also does the reverse wire need 12vdc to make the dvd player function. This is for an xo Vision XO1930.

It sounds like your NHDT-W55 is having issues with displaying audio and video correctly. This could be caused by a faulty connection between the head unit and the speakers or a faulty wiring connection. To troubleshoot, first check all the connections between the head unit and the speakers to make sure they are securely connected. If the connections are secure, then check the wiring connections to make sure they are not loose or frayed. If the wiring connections are good, then the problem could be with the head unit itself and you may need to contact a professional for further help.

I found this in the manual "Violet/White (REVERSE GEAR SIGNAL INPUT) This is connected so that the navigation system can detect. whether the vehicle is moving forwards or backwards

the switch is on the gearbox ,i wouldnt even bother looking for the other end in the cab unless you find the loom running down one side at the front footwell and you can locate the colour of the wire in this big bunch ,unless of course that as this is a 2011 car it may not have a wiring loom as such but a bus line type system with a transistorised switch in the back like the new F type jag .Happy motoring and leave well alone is my advice

i had the same problem with my talon today, all you need to do is get another wire , connect one end to the 12v(red)backup tail light wire and connect the other end to ur dvd player and put it one the wire that is to be connected to the 12v for the revarse camera the wire should be orange but urs might be a different color.

the easy way to check this is . turn the fan to on ... next on the unit outside turn the power off take the orange wire off turn the power back on and run the unit and see what happins if it cools with the orange wire off then hook it up to term o . if it heats with the orange wire off hook it up to o .

you need the reverse wire hooked up for it to send a turn on signal to the unit

Rear View Camera Input: The VM9313 features a composite video input and a green/white wire lead attached to the harness for connection of a rear view camera. If a rear-view video camera is connected, the unit is on, and the TFT monitor is retracted inside the unit, the TFT monitor automatically moves into the viewing position and Camera modes is selected upon shifting into Reverse gear. When shifting into Drive gear, the TFT monitor is retracted back inside the unit. If the monitor is already in a viewing position and in display mode, the monitor automatically switches to Camera mode upon shifting into Reverse. When the reverse driving stops, the monitor returns to its original input display mode. You can choose for the monitor to display a Mirror mode image or a Normal mode image from the rear-view camera.

That wire needs to run back and be hooked to the revese bulb. When the car is in reverse, activating the reverse lights the unit will get a signal knowing that you can use the camera

It sounds like you may not have it wired correctly. When the vehicle is reverse the cam works, but when you shift to any other gear IE: park, drive etc you go to black screen as if no signal. I had basically the same problem on my unit, different unit but...on the back of my unit there was a wire, you probably have the same, that said rear cam 12v dc.I assumed this meant any positive wire would do, but this is NOT the case. That wire must be hooked to the 12v positive reverse light. With my cam I had the wires from the cam hooked up, red to positive reverse light wire, black to ground and obviously video wire to the video in on the unit. but the problem arose with that rear cam 12v dc wire on the back of the unit. It NEEDS to be connected to the same 12v dc wire as the cam itself. This acts as a 'switch' when in reverse, IE: the reverse lights come on sending power to the wires to turn on the cam. When you're not in reverse the camera 'switches off' because the lights are not on, thus no power is being sent to the wires, thus returning the unit to its normal operating screen. This worked for me, hope it helps. Good Luck.