2019 Peterbilt 389 Headlight Bulb Size: A Guide to Proper Replacement

2019 Peterbilt 389 Headlight Bulb Size

When it comes to maintaining your Peterbilt 389 truck, one of the essential components to consider is the headlight bulb. Properly functioning headlights are crucial for safe driving, especially during nighttime or adverse weather conditions. If you need to replace the headlight bulb in your 2019 Peterbilt 389, it’s important to know the correct bulb size to ensure compatibility and optimal performance. In this article, we will provide you with the necessary information regarding the headlight bulb size for your Peterbilt 389 truck.

Headlight Bulb Size Table

Headlight Bulb Size
Low Beam H11
High Beam 9005
Front Turn Signal 3157A
Side Marker 194

The table above provides the headlight bulb sizes for different functions of your 2019 Peterbilt 389. The low beam headlights use H11 bulbs, while the high beam headlights require 9005 bulbs. For the front turn signal lights, you will need 3157A bulbs, and the side marker lights use 194 bulbs.

Replacing the Headlight Bulbs

If you need to replace a headlight bulb in your Peterbilt 389, follow these steps:

  1. Ensure the truck’s engine is turned off and the headlights are switched off.
  2. Open the hood of your truck and locate the back of the headlight assembly.
  3. Find the connector attached to the back of the headlight bulb and gently disconnect it by pressing the release tab.
  4. Remove the old bulb by twisting it counterclockwise and pulling it out.
  5. Insert the new bulb into the socket and twist it clockwise to secure it in place.
  6. Reconnect the electrical connector to the new bulb by pushing it in until it clicks into place.
  7. Repeat the process for the other headlight bulb if necessary.
  8. Close the hood and test the new bulbs by turning on the headlights.

It’s important to note that while these steps provide a general guideline, the exact process may vary slightly depending on the specific model and year of your Peterbilt 389. Consult your vehicle’s owner’s manual or seek professional assistance if you encounter any difficulties or uncertainties during the bulb replacement process.

By knowing the correct headlight bulb size for your 2019 Peterbilt 389 and following the proper replacement procedure, you can ensure that your truck’s headlights are in optimal condition, promoting safety and visibility on the road.

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