WARNING: This page is about a different car, the 2003 Mitsubishi Eclipse. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: DTC 12 Vehicle Speed Signal System Circuit Diagram M/T (1 Of 2)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Fig 2: DTC 12 Vehicle Speed Signal System Circuit Diagram M/T (2 Of 2)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Fig 1: DTC 12 Vehicle Speed Signal System Circuit Diagram A/T