1999 Audi A4 (B5) with bose spund system head unit wiring for aftermarket head unit
• Wiring Harness - Metra 70-1787 Radio Wiring Harness for VW/Audi Bose Integration 1993-2007 • Trim kit - Metra 99-9100 Single DIN Installation Kit for 1996-1999 Audi A4/A6/A8

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