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Ignition Key Switch (Fig. 9, 10)
The ignition (key) switch has three positions (OFF,
START and RUN). The terminals are marked as shown.
B
I
A
X
S
Y
Figure 9
The circuitry of the ignition switch is shown in the chart.
With the use of a continuity tester, the switch functions
may be tested to determine whether all circuits are being
completed while the key is moved to each position.
POSITION
CONT
INUITY
AM
ONG
TE
RMINALS
OTHER
CIRCUITS
MADE
1. OFF
NONE
NONE
2. RUN
B + I + A
X + Y
3. START
B + I + S
NONE
Figure 10
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3000 Page 5 - 19 Testing