On a 2004 Peterbilt 379, the sleeper light switch is typically located on the control panel in the sleeper area, often near the bed or on the side wall. It may also be found on the overhead console, depending on the specific configuration of the truck. If you're having difficulty locating it, consulting the owner's manual can provide more precise information.
On the brake pedal itself.
the brake light switch is an air over elec. switch located in an air block on the floor behind steering shaft
There is no brake light switch. There is a brake light pressure censor that is located under the cab where the driver's seat is. T.R.
I'm not sure if they are all the same but my 379 has the switch built into the air dump switch in the dash
It's attached to the brake pedal arm.
Should be to the left of the clutch pedal.
Stuck brake light switch, or a short to power somewhere in the brake light circuit.
The brake light switch is located on an aluminum air line junction block. The air line block is directly forward of the steering column on the cab side by the firewall. There is an access panel on the engine side of the firewall that gives you access for replacement.
There's continuous power supplied to the circuit. When the switch contacts, it closes the circuit and allows the power to go to the brake lights.
It's just a weatherpack terminal. Literally a plug and play device.
The duration of Light Sleeper is 1.72 hours.
Light Sleeper was created on 1992-08-21.