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MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company

MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company

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Electrical System<br />

Replacement Bulbs<br />

DESCRIPTION<br />

Headlights<br />

Front turn signal<br />

Marker<br />

Stop/tail turn<br />

Backup<br />

Roof marker<br />

Dome<br />

Warning lamp module<br />

PART NO.<br />

9004LLBULB<br />

1156BULB<br />

1895BULB<br />

1157BULB<br />

1156BULB<br />

194BULB<br />

1141BULB<br />

#37 or 73 (T1 3/4 wedge<br />

base<br />

Electrical and Alternator Precautions<br />

Take the following precautions to avoid burning out<br />

alternator diodes:<br />

• Do not start the engine with alternator disconnected<br />

(connections removed) from the circuit.<br />

Preventive Maintenance<br />

• Before welding, disconnect all electronic connections to<br />

the vehicle batteries.<br />

• Remove battery power cable and insulate it from the<br />

vehicle. See “Welding” on page 218 for more information.<br />

• Do not run the engine with the batteries disconnected.<br />

• Do not disconnect the battery cables or alternator connection<br />

cables with the engine running.<br />

• Never turn the ignition switch to the IGN & START position<br />

with the engine running.<br />

• When charging the battery (installed in the vehicle) disconnect<br />

the battery cables.<br />

• Do not reverse the cables of the alternator, starter motor,<br />

or battery.<br />

• Do not polarize the alternator. The alternator should not<br />

be polarized like a generator. To ensure correct polarity,<br />

use a test lamp or a voltmeter.<br />

– 194 – PB1318 3/01 Model <strong>330</strong>

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