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Pin 1-wire-Wht/Blk: Breaker ignition I/P
Pin 2-wire-Green: Vacuum switch I/P
Pin 3-wire-Viol/Wht: Grnd for time delay I/P
Pin 4-wire-Grey: Magnetic pickup I/P
Pin 5-wire-Blue: Tach alternator I/P
Pin 6-wire-Violet: Choke (sink) O/P
Pin 7-wire-Wht/Red: Crank (sink) O/P
Pin 8-wire-Yellow: Engine running (sink) O/P
Pin 9-wire-Grn/Wht: Start I/P
Pin 10-wire-Red/Wht: Connect #11 for alarm
Pin 11-wire-Ong/Wht: Connect #10 for alarm
Pin 12-wire-Black: Battery negative (–)
Pin 13-wire-Red: Battery positive (+)
Pin 14-wire-Brn/Wht: Stop I/P
Pin 15-wire-Grey/Wht: Connect to #14 for close to
run-open to stop operation
Pin 16-wire-Wht/Brn: Crank (source) O/P
Pin 17-wire-Yel/Wht: Spare I/P
Pin 18-wire-Blue/Wht: Water temp. I/P
Pin 19-wire-Blk/Wht: Oil pressure I/P
Pin 20-wire-Brown: Shutdown summary (sink) O/P
Pin 21-wire-Wht/Ong: Ignition relay Common
Pin 22-wire-White: Ignition relay N.O.
Pin 23-wire-Wht/Yel: Ignition relay N.C.
Pin 24-wire-Orange: Time delay (sink) O/P
Diagram 2: A88 Wiring Harness