Cub Cadet Z-Force S Series - Manual (Page 102)

Z-Force-S
96
Lighting circuit
The Z-Force-S Headlight available as an optional kit. The headlight kit comes with a harness and a rocker switch
to turn the headlights on and off. The main harness has a pigtail inside the left pod that the headlight harness plugs
into.
• There is power to the headlight switch when the key switch is in any of the run positions.
• The red wire is connected to the A1 terminal of the key switch.
• The green wire is a ground
Start Circuit
Turning the key to the START position:
• spins the starter motor
• enables the ignition
• energizes the afterfire solenoid
Looking at the circuit that sends power to the starter
motor: See Figure 7.12.
1. When the key switch is in the START position, bat-
tery power is passed from the B terminal to the S
terminal.
2. Power goes from the key switch S terminal to the
brake switch N.O. contacts. (orange wire)
2a. If the park brake is off, the switch plunger will
be up and the N.O. contacts will be open. The
system monitor will measure open circuit volt-
age, illuminating the brake symbol.
2b. If the park brake is set, the switch plunger will
be depressed, and the N.O. contacts will be
closed. Power will be passed along to the PTO
switch.
3. When the key is in START, and the park brake is
set, power will continue to the A-N.C. terminal of the
PTO switch (orange/black trace).
3a. If the PTO switch is on, the N.C. terminal on the A set of contacts will not connect to anything. The sys-
tem monitor will measure open circuit voltage, illuminating the PTO symbol.
3b. If the PTO switch is off, the N.C. terminal on the A set of contacts will be connected to the COM terminal
on the A set of contacts. Power will be passed along to the trigger terminal on the starter solenoid.
4. When the following conditions are met:
• Key to START
• park brake set
• PTO off
The stater solenoid trigger terminal will receive power (orange wire).
5. When the starter solenoid is triggered, it internally connects the heavy red cable from the battery with the
heavy red cable that leads to the starter motor. The starter spins.
' !
, 3 !
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Figure 7.12