Usage:
D6D ( 75W1-2907, 75W2909-2945, 75W2909-2947, 75W2949-3040, 75W3045-3052, 75W3054-3078, 75W3080-3098, 75W3103-3111, 75W3103-3159, 75W3103-3160 ) Tractors
The positive (+) white wire that connects the neutral start switch to the start relay may be incorrectly connected to the starting motor solenoid instead of the start relay coil. This way the starting motor solenoid current goes through the start switch and through the neutral start switch rather than through the relay. This situation may cause premature neutral start switch failure.
To correct, be sure the positive white wire from the neutral start switch connects to the positive coil terminal of the start relay. See illustration to verify correct start relay wiring.
Correct wiring diagram.