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| Illustration 1 | g00509917 |
Wiring Diagram for the Instrument Panel (1) Light switch (2) Panel lights (3) Instrument panel (4) Ammeter (5) Oil pressure gauge (6) Water temperature gauge (7) Gear oil pressure gauge (8) Terminal strip (9) Battery wire (10) Oil pressure switch with time delay (11) Sending unit for oil pressure (12) Sending unit for water temperature (13) Sending unit for gear oil pressure | |
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| Illustration 2 | g00509918 |
Gauges with Resistors for 32 Volt System (1) Resistor (2) Oil pressure gauge (3) Resistor (4) Water temperature gauge (5) Resistor (6) Gear oil pressure gauge | |
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| Illustration 3 | g00509919 |
Resistor for 32 Volt System (65 Ohms) | |
Indicators and Sending Units
Sending Unit for the Water Temperature
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| Illustration 4 | g00509920 |
Sending Unit for the Water Tempartaure (1) Connection (2) Bushing (3) Bulb | |
The sending unit for the water temperature is an electrical resistance. The sending unit for the water temperature changes the value of the resistance according to the temperature which bulb (3) feels.
The sending unit is in a series circuit with the electrical indicator. When the temperature is high, the resistance is high. This makes the indicator have a high reading.
The sending unit must contact the coolant. If the coolant level is too low because of a sudden loss of coolant while the engine is running or because the level is too low before starting the engine, the sending unit will not work correctly.
Sending Unit for the Oil Pressure
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| Illustration 5 | g00509921 |
Sending Unit for the Oil Pressure (1) Connection (2) Bushing | |
The sending unit for oil pressure is an electrical resistance. The sending unit for oil pressure has a material which changes electrical resistance according to pressure which the unit feels.
The sending unit for oil pressure is in a series circuit with the electrical indicator. As the pressure on the sending unit changes, the reading on the indicator changes in the same way.
Electric Hour Meter
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| Illustration 6 | g00509922 |
Hour Meter Wiring Diagram (1) Electrical hour meter (2) Pressure switch (3) Alternator wire or battery wire | |
Electric hour meter (1) measures the clock hours that the engine operates. The hour meter activates when pressure switch (2) closes. Pressure switch (2) closes the circuit from the positive terminal on the alternator or the battery when the engine oil pressure is above approximately 40 kPa (6 psi).
Electric Tachometer Wiring
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| Illustration 7 | g00509923 |
(1) Magnetic pickup (2) Terminal connections (terminal 7 and 8 on standby governor control) (3) Tachometer (4) Ground connection (governor control chassis ground) (5) Governor control terminal strip (6) Wiring connections (second tachometer circuit) (7) All wire must be 22AWG shielded cable or larger (8) Dual speed switch terminal strip (9) Ground connection to the engine | |
Wiring Diagram
Table 1 gives the correct sizes and color codes.
| Color Code | Total Maximum Recommended Length of the Battery Cable (11) | Wires that are Marked #X | |||
| B-Black | Cable Size | Electric Starting | Output of the Charging Unit | Wire Size | |
| W-White | 12 Volt | 24 to 32 Volt | 0 to 18 amp | #14 | |
| R-Red | 0 | 4.0 ft | 15.0 ft | 19 to 30 amp | #10 |
| O-Orange | 00 | 5.0 ft | 18.0 ft | 31 to 45 amp | #8 |
| BR-Brown | 000 | 6.0 ft | 21.0 ft | 46 to 65 amp | #6 |
| LT GN-Light Green | 0000 | 7.5 ft | 27.0 ft | 66 to 105 amp | #4 |
| PU-Purple | The number that is following the color code is the wire size that is recommended. | ||||
| W/B-White with Black Stripe | |||||
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| Illustration 8 | g00509924 |
Starting and Charging System (1) Off/Start switch (2) Ammeter (3) Fuel shutoff solenoid (4) Starting motor solenoid (5) Alternator regulator (6) Starting motor (7) Pressure switch that is normally open (8) Alternator (9) Battery (10) Service hour meter (11) Battery cable | |