If you put the jumper wire on the (S) terminal of the key switch and the solenoid blue wire, does it start when turning the switch?
if yes the switch is ok, move on.
Next put the jumper from the Switch to the engine connector, and try to start it, does it start? if yes, move on to the output side of the brake switch, and try to start it with the key switch, Does it start? if yes move to the input side of the
brake switch, Now you will have to depress the brake for it to start.
Does it start? if yes, move on to the PTO switch, if it does not start you have found the problem in the brake switch.
Do you see how you are following the wiring diagram to find the place where the voltage drops?
Any questions?
