An aftermarket navigation system simply refers to a navigation system that was not originally a part of the original car or place of installation. For example, if you do not like the CD player that came with your car and you decide to get a new one and have it installed. You have just purchased an "aftermarket" CD player. The same applies for a navigation device.
When buying a navigation system, consider looking into reviews and price to determine the best navigation system for your needs. Cheap does not always mean bad quality, and expensive does not always mean good quality.
Federal system of WHAT?
I put an aftermarket system in my intrigue, and don't recall a "stereo accessory wire". Do you mean the power antenna wire? Or is this a wire on your aftermarket box? Here's a GM diagram: http://www.installdr.com/Harnesses/GM-Wiring.pdf
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"What dose resected mean?" "What dose resected mean?"
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Global Positioning System (GPS) uses the signals from geosynchronous satellites to provide accurate position information for navigation. As such utilizing GPS for navigation amounts to utilizing satellite navigation ("sat nav"). Note that while GPS, which was developed by the US government is the most widely used satellite navigation system, Russia also has the Global Navigation Satellite System (GLONASS) deployed which can provide essentially the same satellite navigation capabilities - and can be used in along with GPS to get faster and more accurate position information. The EU, Japan, China, and India are also working to deploy a satellite navigation systems.
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it depends what car it is, stuff like that stands for different trims of cars. such as having a wing or a navigation system
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If by 'upgrade', you mean updated maps, then head off to your BMW dealer with a bunch of money to put down for the new DVD navigation disc. That simple. If you mean change it to the better iDrive type Nav, then not possible, I'm afraid.
it depends on if the smoking in your system is gone or not i mean if it was only one time then it should be out of your system