WARNING: This page is about a different car, the 2003 Acura 3.2CL, 2002 Acura 3.2CL, and 2001 Acura 3.2CL. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Stereo Sound System Wiring Diagram ('01-02 models - 1 Of 2)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 2: Stereo Sound System Wiring Diagram ('01-02 models - 2 Of 2)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 3: Stereo Sound System Wiring Diagram ('03 model - 1 Of 2)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 4: Stereo Sound System Wiring Diagram ('03 model - 2 Of 2)