Peterbilt Medium Duty Trucks Operator's Manual after 1-07

Operating Instructions
Instruments and Controls
Daytime Running Lights (option)
On vehicles equipped with the Daytime Running Light (DRL)
system, the low beam headlights are turned ON automatically
at reduced brightness (to conserve headlamp life).
Three controls (or conditions) will affect whether the system
is ON or OFF:
• headlight switch
• engine on
• parking brake
If the headlight switch is turned OFF, the DRL system
engages automatically after the engine starts and you
release the parking brake. If the headlight switch is ON, the
DRL system is overridden, and headlights operate normally.
WARNING! Do not use daytime running lights
(DRL) during periods of darkness or reduced
visibility. Do not use DRL as a substitute for
headlights or other lights during operations that
require lighting of your vehicle. Doing so could
lead to an injury accident.
Panel Lights
To Operate the Panel Lights:
The Panel Lights knob lets you vary the
brightness of your instrument panel lights.
The knob is located on the left instrument
panel. See page 17.
Turn on either the headlights, clearance lights, or fog/driving
lights.
To brighten the instrument panel lights, turn the knob clockwise
(to the right).
To dim the instrument lights or to turn them off, turn the knob
counterclockwise (to the left).
ID and Clearance Lights
A toggle switch controls the amber lights on
top of your cab, plus any additional lights that
were installed on the front, sides, and rear of
your vehicle. The switch is located on the left instrument
panel, and is labeled CL LPS. See page 17.
Medium Duty (R10/06) Y53-6008 – 31 –