Compatible with：
Fit for Peterbilt 379 2004-2005
Fit for Peterbilt 330 all model
Fit for Peterbilt 357 all model
Fit for Peterbilt 359 all model
Fit for Peterbilt 377 all model
Fit for Peterbilt 378 all model
Fit for Peterbilt 387 all model
Note: Will Not Fit for Peterbilt 379 2005+ models
The function of a truck's light switch is to control the vehicle's lighting system. It allows the driver to turn the headlights, taillights, and other exterior lights on or off as needed. The light switch typically has different positions or settings, such as:
Off: Turns off all exterior lights.
Parking Lights: Activates only the parking lights, which are the lights at the front and rear of the vehicle.
Headlights: Turns on the headlights for nighttime driving.
High Beams: Activates the high beam headlights for increased visibility on dark roads.
Turn Signals: Controls the left and right turn signal lights for indicating the direction of a turn.
Hazard Lights: Turns on all turn signal lights simultaneously to warn other drivers of a hazard or emergency.
Applicable Models: Fit for Peterbilt 379 2004 2005, Fit for Peterbilt 330 357 359 377 378 387 all model
Replacement Models: light switch 577.75611 16-8956K996
Function: This light switch features a DPST (Double Pole Single Throw) configuration, allowing you to easily switch between different lighting options for your vehicle.
Configuration: This switch is equipped with four blade terminals to ensure safe and reliable connection of your headlights and position lights, solving problems such as poor contact, burnout, and broken toggle positions.
Material: This light switch is made of a mixture of durable plastic and metal materials, which is wear-resistant and corrosion-resistant. It can meet the needs of daily road use and has stable performance.

Light Switch for Peterbilt 330 357 359 377 378 379 387, Dpst Toggle Headlight Sw