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Multi Pro 5700–D
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Electrical System
Indicator Lights
High Temperature Warning Light
If the engine coolant temperature rises to approximately
220
o
F (104
o
C), the high temperature light should come
on when the normally open temperature sender closes.
To test the high temperature warning light and circuit wir-
ing, start the engine and ground the blue wire attached
to temperature sender located on water pump housing
(see Temperature Sender in this Chapter). High temper-
ature warning light should illuminate.
Glow Plug Indicator Light
The glow plug light should come on when the ignition
switch is placed in the ON position prior to placing the
ignition switch in START. The light should stay lit for
approximately 6 seconds while the ignition switch is left
in the ON position.
Engine Oil Pressure Light
The oil pressure light should come on when the ignition
switch is in the ON position with the engine not running.
Also, it should light with the engine running if the engine
oil pressure drops below 4.3 PSI (0.3 kg/cm
2
).
To test the oil pressure light and circuit wiring, ground the
brown/white wire attached to oil pressure switch located
on the front side of engine near the oil dipstick. Turn igni-
tion switch to the ON position; the oil pressure light
should come on indicating correct operation of the elec-
trical wiring to the oil pressure switch.
Charge Indicator Light
The charge indicator light should come on when the igni-
tion switch is in the ON position with the engine not run-
ning or with an improperly operating charging circuit
while the engine is running.
Testing Indicator Lights
1. Apply 12 VDC to terminals 1A and 2A (Fig. 20).
2. Ground terminals 1B and 2B (Fig. 20).
3. Both indicator lights should illuminate.
1. High temp warning
2. Glow plug indicator
3. Engine oil pressure
4. Charge indicator
Figure 19
4
2
1
3
Figure 20
1. High temp warning
2. Glow plug indicator
3. Engine oil pressure
4. Charge indicator
5. Warning light front
6. Warning light back
1A (+)
2A (+)
2B (–)
1B (–)
4
2
1
3
5
6
Electrical
System