The DL1 should be mounted in the vehicle on a flat horizontal surface. For temporary installation you can just use the Dual-LockTM tape supplied, or for a more permanent installation the aluminium mounting brackets. The DL1 must be mounted with the buttons and lights facing either directly towards the back or the front of the car. Avoid any extremes of temperature and vibration for both the DL1 module and the GPS antenna. In particular, if the DL1 is exposed to vibration then the GPS data will become inaccurate.
Place the GPS antenna on the roof of the car, and screw the antenna connector onto the gold connector on the back of the DL1.
If there is a cigarette lighter socket available on the vehicle, then the power lead provided can be used as a simple convenient way to supply power to the DL1. If not, connect the DL1 to a fused power source, which is available when the ignition is turned on. Connecting to a permanent power source will cause the DL1 to drain the battery continuously. Please do not connect anything to your car unless you are confident in what you are doing!