In dash car DVD are very popular in recent days, it can be installed in any types of car. There are three basic options to screw and barrel for injection molding machine install- the dashboard, the seat headrest and the ceiling. How to hook up an in dash Navigation DVD depends on the car model you have, Reading all instructions that come with the player’s installation kit is highly recommended.Step 1: Open the hood of the car and disconnect the battery. You can disconnect the negative cable only and still be safe, but it’s best to disconnect both the positive and the negative cable.Step 2: Using the proper screwdriver, take out the screws holding the factory stereo in your car’s dashboard, then remove the stereo from the dash. You may have to remove parts of the dash to take the stereo out.Step 3: Carefully remove the connectors from the back of the car stereo. Check the connectors to make sure they’re not broken or dirty.Step 4: You can buy a wiring harness designed for your vehicle at a car audio and video equipment dealer; these are intended for aftermarket installations. Connect the wiring harness to the car’s connector. See the wiring harness instructions for the proper connection.Step 5: Insert the in dash navigation in the aftermarket installation kit head unit. All dashboards are different, so you must buy an installation kit that matches the maker of car.Step 6: Connect the other end of the wiring harness to the back of the car DVD Player. Connect the antenna cable to the antenna input on the back of the DVD player.Step 7: Insert the DVD player and the installation kit in the car’s dash. Put in any screws that are required and replace any dash panels that you removed.Step 8: Replace the battery cables and make sure they are tightened. Close the hood and turn on the car. The In Dash Car DVD panel will light up if the installation was successful.