What is the difference between Factory installed and Dealer installed remotes?
A Factory Installed remote means that the keyless entry system on the car or truck was installed by the manufacturer at the time of production, at the automobile factory.  A Dealer Installed remote means that the keyless entry system on the car or truck was installed by the car dealership after the vehicle arrived at the dealership (still the automotive manufacturer’s brand).  An After Market remote means that the Dealer or previous owner had a third party keyless entry system installed on the vehicle.  After Market means not the actual automotive manufacturer brand, but another company supplied the parts and remotes.  A good example of an After Market keyless entry remote system is Viper remotes that were put on many cars in the 1980s and early 1990s.  As always, feel free to contact http://www.carandtruckremotes.com at 866-690-4308 if you need more information on this subject.