WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Gauge Control Module - Circuit Diagram (1 Of 4)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 2: Gauge Control Module - Circuit Diagram (2 Of 4)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 3: Gauge Control Module - Circuit Diagram (3 Of 4)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 4: Gauge Control Module - Circuit Diagram (4 Of 4)