Brake Fluid Pump Relay
ABS PUMP/MOTOR RELAY CONNECTOR
CAV CIRCUIT.......... FUNCTION
A..... A21 DB........... System Relay Voltage
B..... A10 RD/DG........ Battery 12V
C..... B21 GY........... Pump/Motor Ground, Cab Controlled
D..... B82 BR/WT........ Pump/Motor and CAB Motor Monitor