Aftermarket in car GPS navigation systems offer the greatest range of solutions and flexibility for vehicles fitted with a standard single of double DIN slot.
An aftermarket GPS offers additional features for further integration of technologies like dual-zone entertainment, iPod & iPhone control and reversing camera and auxiliary video inputs.
One of the strengths of an integrated aftermarket GPS navigation unit is the accuracy afforded by the addition of Vehicle Speed Sensors (VSS) and vehicle data collected via can-bus systems where applicable. While this all sounds a bit high-tech, what it means is that even with temporary loss of satellite data the unit will accurately track your vehicle to ensure it stays up with the flow of traffic. Lets face it, if a GPS is slow its as good as useless… well you’ll end up doing more than one loop of the block at least once (or twice).