All vehicles are pretty much the same when it comes to adding an aftermarket overhead monitor. The installation seems much more daunting than it really is. You will more than likely be placing the overhead console where the interior light is so remove that light and use that hole to run your wires. It's easier (for me) to run the wires to the passenger side above the front door, so I pull the rubber trim down and run a fish tape above the headliner to the interior light hole. Attach your wires (power, ground, ignition, 3 way rca if needed) to the fish tape and pull them through. Once the wires are through you will look up through the hole and find a crossbrace; this is where you will screw in half of your mounting screws. Make a mark on the headliner where the brace is, making sure that the mark is small enough to be covered by the overhead when it is mounted. Line up the 2 mounting holes that will attach to the brace and with a sharpie mark THE OTHER 2 MOUNTING HOLES on the headliner. Place a scrap piece of wood wide enough to span the other mounting holes above the headliner where you just marked and shoot a screw through the headliner to hold it in place. Connect all of your wires, hold the console in place, lining up the mounting holes with the marks you made earlier and using self tapping screws that are not long enough to go through the roof of the truck screw it all in starting with the holes that will be mounted to the brace and ending with the holes that will go into the wood. The screws in the wood will just sandwich the headliner to stabilize the overhead; the heavy lifting is done by the brace mount screws.
Since it comes out so easily I find the easiest place to connect the wiring is behind the radio. This not only makes the installation easier, but is keeps all of the entertainment on the same fuse. Additionally if you plan to add a monitor head unit later this keeps the RCA's in the right place.
I really hope this helps you out.