Headrest screens are safe, inexpensive, and very easy to install without ripping your car apart.
Headrest screens are probably the most popular aftermarket installation. Giving your vehicle an "in-flight entertainment" look, they can be cleanly installed into a vehicle without expensive or difficult modifications.
There are several ways to get screens installed or attached to headrests so that passengers in the rear seats can enjoy video.
Figure 3-4 shows one way, which is simply to buy a headrest with a screen preinstalled. Companies such as Visualogic and Audiovox make these units for a range of vehicles, including many popular SUVs with gray or beige leather headrests. These headrests are slightly wider than OEM headrests, so that they can accommodate 7" wide-screen monitors. They also have the benefit of being tested to comply with Department of Motor Vehicles standards for head protection in a crash (the primary purpose of a headrest). Another company, Starvision, makes a model that can adapt to any size of headrest. And as always, you can just Google "headrest screen kit" and see what you find.
Another option for installing screens is to use a bracket that connects to the headrest posts. These brackets come in various shapes and provide a standard mounting screw that can support a headrest monitor.
Although these screens are easy to mount, the cables will be somewhat visible even in the neatest ...