A/C high pressure switch Connector end view (C1078)

Fig 1: A/C High Pressure Switch Connector End View (C1078)

Courtesy of FORD MOTOR CO.

Pin	Circuit	Circuit function
1	347 (BK/YE)	A/C high pressure switch (19D594), switched output
2	570 (BK/WH)	Ground
3	1154 (WH/BK)	A/C high pressure switch (19D594), Powertrain Control
4	883 (PK/LB)	A/C clutch cycling pressure switch (19D594)