🔧 Headlight Bulbs - Bulb Replacement

This guide covers replacing both low-beam headlight bulbs on your F-150. The bulbs are accessible from the back of the headlamp assembly, but space is tight, so taking your time helps prevent broken tabs and burned fingers.

Difficulty Level: Beginner | Estimated Time: 0.5-1 hours

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⚠️ Safety & Precautions

• Turn the lights off and let the bulbs cool before touching them.
• Do not touch the glass on halogen bulbs with bare fingers. Skin oil can shorten bulb life.
• Work with the key off and the parking brake set.
• No battery disconnect is required for this job.
• If one bulb is burned out, the other is often close behind. Replace both sides together.

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🔧 Required Tools

You'll need the following tools for this repair:

• Nitrile gloves
• Safety glasses
• 10mm socket
• Ratchet
• Extension
• Trim clip tool
• Flashlight

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Low beam headlight bulb - Qty: 2

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Turn the headlight switch off.
• Open the hood and make sure the engine is cool.
• Put on gloves before handling the new bulbs.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Access the back of the headlamp

• Open the hood and locate the rear of the headlamp assembly.
• If the washer reservoir or intake duct limits access, use the 10mm socket and ratchet to remove any nearby air duct fasteners as needed.
• Work slowly in tight spaces.

Step 2: Remove the old bulb

• Reach behind the headlamp and unplug the bulb connector by hand.
• Rotate the bulb socket counterclockwise with your hand and pull it straight out.
• Set the old bulb aside without touching the glass if it is halogen.

Step 3: Install the new bulb

• Put on nitrile gloves and handle the new bulb by the base only.
• Insert the new bulb into the headlamp opening and rotate it clockwise to lock it in place.
• Reconnect the electrical connector until it clicks.
• Do not force the connector.

Step 4: Repeat on the other side

• Use the same process for the opposite headlight bulb.
• Make sure both bulbs sit fully seated and locked.

Step 5: Reassemble and test

• Reinstall any air duct or access pieces using the 10mm socket and ratchet if you removed them.
• Close the hood.
• Turn on the low beams and confirm both sides work.

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✅ After Repair

• Check both low beams from the front of the truck.
• Verify the new bulbs are seated evenly.
• If one side does not light, recheck the connector and bulb lock position.
• If the beam looks very dim, the bulb may not be fully seated.

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💰 DIY vs Shop Cost

Shop Cost: $120-$220 (parts + labor)

DIY Cost: $30-$80 (parts only)

You Save: $90-$140 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.