Automatic A/C

A 3 A/C DUAL PRESSURE SW
1-4 : Open above approx. 20 kgf/Sq.cm (29 psi, 196 kpa) or 32 kgf/sq.cm (464 psi, 3140 kpa)

A 15-A, A 16-B A/C CONTROL ASSEMBLY
A-1-GROUND : Always approx. 12 volts
A-2-GROUND : Approx. 12 volts with the ignition SW at ON position
A-24-GROUND : Always continuity