Peterbilt 359 low air sensor location

the main low air pressure switch is located under the high low switch on the floor. Left side. Remove two crews then cover pops out. Then you will see another floor board cover plate. Just beside it. The little horn is under dash. Remove steering wheel clamp bolt . Lay steering wheel down on the seat. Be care with wires and oil pressure line as you lay dash down , best to use a small bunge cord. And for safety remove the battery cables lots of power behind panel.

 

the top two lights are your turn signals. Thinking you have the little peanut bulb type. The bulbs remove from the back. Quarter turn type. Could be wrong shine light through to read lense.

 

If you have other light problems. Like markers, tail lights, and turn signals, check your four way blinker switch, if weak , will make you loss ur mind. Everything runs through the four way blinker switch. Napa sells the 16 light switch. Hope it helps.

 

John hard to beat an older truck, sometimes you have too pull out wiper knob, supplying air to the motor, turn right for faster motion, then grab wipers an give light tug. Lol. Ounce they run only lube joints, listen for air leaks. Never spray lube into air line supply will damage seals in the air motor.