Installing Headrest Screens to Montero / Pajero / Shogun 2007-2015

These are a couple of headrests I purchased. This project covers installing DVD/TV headrests to your car seats. If you plan on hooking this up to your head-unit, ensure that it has a video out first. Also, you do get various models which have their own DVD/USB inputs built in. What you see here has its own DVD player, but alternatively has an AV input.
The first step is to find a long wire and attach it to the end of the headrest's cable. I used insulating tape to do this. Its best that its not made too bulgy, but at the same time strong enough to withstand the tug of pulling the wire.
Insert the long wire as much as possible and search for it using your fingers at the back of the seat. Some cars have a removable rear cover - specially if you have leather seats. Otherwise the wire could come up at the bottom of the seat. However, its quite likely that you won't get it right at the first time.
If all goes well, you should be able to get the wire as indicated here. (Note that this was on a Mitsubishi Montero/Pajero/Shogun 2013 with fabric seats.)
Carefully insert the headrest in and adjust the height as required. Run the wires from under the seat, and then under the main console in the middle (under the gear lever etc). My intention was to get the headrest to work along with the head-unit. So I had to get the video out of the head unit as well as power.
I connected the power from the amplifier which I already had, and i got the head-units amplifier on signal to power on the headrests. The second headrest gets power from the first one, however your's may be different, and require two separate connections. Afterwards hook it up to the head-units video out.
Congratulations ! you now have working headrests!
Things to consider You can install the headrests so they will turn on only when the head unit is powered on However, do not connect the headrests directly to the antenna power out/amplifier power out (you may overload it) The correct way is to use a relay to do this, using the antenna/amplifier signal cable just to signal the relay. In some countries it may be illegal to have the headrests working while the vehicle is in motion If so, you will need to get a signal from the gear lever control when the gear is in Park. Some head-units require you to enable the video out either in the settings or using a key combination Refer your head-units instruction manual on how to do this