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Removal and Replacement:
1. Disconnect the ten pin plug from the main wiring
harness to the circuit board.
2. Remove the six #4-40 screws and spacers secur-
ing the circuit board to the solenoid mounting
bracket. Remove circuit board and discard.
3. Install new circuit board using #4-40 screws and
spacers to secure the circuit board to the vacuum
switch mounting bracket. The spacers must be
between the solenoid mounting bracket and the
circuit board.
4. Refer to Fig. 3 for circuit board ten pin connector.
J
4
J
1
J
2
J
3
FIG. 3 CIRCUIT BOARD CONNECTOR LOCATION
P1528
CIRCUIT BOARD
FIG. 2 CIRCUIT BOARD
P1556
OFF
OFF
O
N
OFF
OFF
O
N
OFF
OFF
O
N
OFF
OFF
O
N