Installing the DVD-ROM drive

The DVD-ROM drive itself, the central component, is basically a box that needs to be installed somewhere out of the way.

The box installs much like an external amplifier or satellite radio tuner. The first thing you need to do is find a good location for it. Under the passenger seat is the most common location (and don't worry about accessing the drive regularly; once you've inserted the map disc, you won't likely take it out).

Warning: removing your seat could deactivate your vehicle's SRS system.

The box not only contains the DVD-ROM drive, but also a gyroscope. The gyroscope relays important direction information about the turns you make to the system. (The system uses this information in conjunction with the information it receives from the GPS satellites with which it's in contact via the antenna.) Because of this, you must mount the box completely horizontally; mounting the box at an angle will throw the gyroscope off, and cause the system to deliver incorrect in-route guidance.

The best place for the navigation unit itself is on the floor. For the gyroscope to work accurately, you must make sure the unit is mounted horizontally, and aligned correctly with respect to the vehicle. ("Brain box" of the Pioneer AVIC-N1 navigation receiver shown above.)

The DVD-ROM drive box has four mounting feet or a mounting bracket. Once you've found the spot in which you'd like to mount the box, mark the location of the feet. You'll then have to drill holes for the screws (which are usually included). Before drilling, check beneath the mounting location to make sure you don't puncture the fuel tank, fuel lines, transmission or brake lines, etc. If all is clear, drill away. Secure the box in place with the screws.