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SECTION 8
ELECTRICAL SYSTEM AND COMPONENTS
NOTE:
Do not allow the baking soda solution to enter
the cells as this will destroy the electrolyte.
KEY SWITCH
The key switch used on Magnum engines equipped
with instrument panels is shown in Figure 8-15. Itis а
three position (OFF, RUN, START), break-before-
make type switch.
Position 1 - OFF
\
'osition 2 - RUN
Position 3 - START
5 - Position
Connector Body
S - Starter
B - Battery
zi
KS
A-
Accessory
M - Module
Rear Of Switch
Figure 8-15. Key Switch.
Testing
Test the switch for continuity using an ohmmeter or
continuity test light. For each switch position, continu-
ity should be present across the terminals listed in the
table below:
Switch
Continuity
Position
Across Terminals
1-OFF
G+M+A
2 - RUN
B+A+R
3 - START
B+S
SOLENOID
A solenoid is used on applications. The solenoid is
an electrically-actuated normally open switch de-
signed for heavy current loads. Refer to Figuré 8-16.
Stud Terminals
Solenoid
„Ў
Case Ground
Tab Terminal
Figure 8-16. Starter Solenold.
The solenoid is used to switch the heavy current re-
quired by the starter using the key switch (designed
for low current loads).
Testing
1. Connect an ohmmeter or continuity tester across
the stud terminals of solenoid.
2. Apply 12 volts DC across the tab terminal and
case ground of solenoid and observe ohmmeter
or tester.
NOTE: Apply positive (+) of voltage supply to
tab terminal; negative (-) to case ground.
3. The ohmmeter or tester should indicate continuity
as long as voltage is applied.
If there is no conti-
nuity, the solenoid is probably faulty and should
be replaced.
Check the solenoid further using an ohmmeter
(Step 4).
8.12
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