WARNING: This page is about a different car, the 2003 Subaru Outback, 2003 Subaru Legacy, and 2003 Subaru Baja. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Cruise Control Module I/O Signal Terminals
Courtesy of SUBARU OF AMERICA, INC.
Fig 2: Cruise Control Module I/O Signal Electrical Specification Chart (1 Of 2)
Courtesy of SUBARU OF AMERICA, INC.
Fig 3: Cruise Control Module I/O Signal Electrical Specification Chart (2 Of 2)