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Peterbilt 579 Headlight Bulb Size

Introduction
The Peterbilt 579 is a popular and reliable truck model known for its durability and performance. One essential component of any vehicle is its headlights, which ensure visibility and safety on the road. In this article, we will discuss the headlight bulb size for the Peterbilt 579, providing you with the necessary information to replace or upgrade your bulbs.

Headlight Bulb Size Table

| Position | Bulb Size |
|——————|—————-|
| Low Beam | H11 |
| High Beam | H7 |
| Turn Signal | 3157 |
| Parking/Running | 194 |
| Fog/Driving | H16 |

Headlight Bulb Replacement Steps

1. Low Beam Bulb Replacement:
– Locate the low beam headlight housing.
– Twist the bulb socket counterclockwise to remove it from the housing.
– Pull out the old bulb from the socket and replace it with a new H11 bulb.
– Insert the socket back into the housing and twist it clockwise to secure it.

2. High Beam Bulb Replacement:
– Find the high beam headlight housing.
– Rotate the bulb socket counterclockwise to detach it from the housing.
– Remove the old bulb from the socket and install a new H7 bulb.
– Reinsert the socket into the housing and twist it clockwise to lock it in place.

3. Turn Signal Bulb Replacement:
– Locate the turn signal housing.
– Twist the bulb socket counterclockwise to remove it.
– Take out the old 3157 bulb and replace it with a new one.
– Insert the socket back into the housing and twist it clockwise to secure it.

4. Parking/Running Bulb Replacement:
– Find the parking/running light housing.
– Twist the bulb socket counterclockwise to detach it.
– Remove the old 194 bulb and insert a new one.
– Reinsert the socket into the housing and twist it clockwise to lock it in place.

5. Fog/Driving Bulb Replacement:
– Locate the fog/driving light housing.
– Twist the bulb socket counterclockwise to remove it.
– Take out the old H16 bulb and replace it with a new one.
– Insert the socket back into the housing and twist it clockwise to secure it.

Conclusion
Knowing the correct headlight bulb size for your Peterbilt 579 is crucial when it comes to maintaining optimal visibility and safety on the road. By following the steps outlined above, you can easily replace the bulbs in your truck’s headlights. Remember to always consult your vehicle’s manual or seek professional assistance if you are unsure about any aspect of the replacement process.