2002 2003 2004 2005 2006 2007 2008 Audi A4 Car DVD Navigation Upgrade Installation Instruction

Nondestructive installation has been used in Audi A4 factory screen upgrade car DVD player navigation system. All connections are using proprietary plugs. Warranty is not affected by the upgrade without breaking the original car circuit. The installation is an additional function at the base of the original one and a seamless upgrade. There’s no any …

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