Sound Quality Is Bad In All Modes (Volume Is Too Low): Wiring Diagram

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Sound Quality Is Bad In All Modes (Volume Is Too Low) Wiring Diagram (6CD Type Except Mark Levinson)

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Fig 2: Sound Quality Is Bad In All Modes (Volume Is Too Low) Wiring Diagram (1CD Type Except Mark Levinson)

Fig 3: Sound Quality Is Bad In All Modes (Volume Is Too Low) Wiring Diagram (Mark Levinson Type)