🔧 Regal - Rear Turn Signal Bulb Replacement

Your Regal’s rear turn signal bulbs sit inside the tail lamp assembly. Replacement is usually done from inside the trunk by removing a small access panel (and on some builds, removing the tail lamp nuts first).

Difficulty Level: Beginner | Estimated Time: 0.5-1.0 hours

Assumption: your Regal uses replaceable (non-LED) rear turn signal bulbs.

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⚠️ Safety & Precautions

• ⚠️ Turn ignition OFF and remove the key before touching any bulb sockets.
• ⚠️ Let bulbs cool first; they can be hot.
• ⚠️ Don’t touch the new bulb glass with bare fingers; oils can shorten bulb life.
• ⚠️ Support the trunk trim so clips don’t snap.
• Battery disconnect is not required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Trim removal tool
• Phillips screwdriver
• 10mm socket
• 1/4" drive ratchet
• Small flashlight

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear turn signal bulb (amber) - Replace in pairs - Qty: 2

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Open the trunk and remove any cargo so you can work comfortably.
• Have a trim removal tool ready (a plastic pry tool that helps pop clips without breaking them).

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Access the tail lamp from inside the trunk

• Use a small flashlight to locate the rear of the tail lamp assembly behind the trunk liner.
• If your trunk has a small service door/cover, open it by popping it loose with a trim removal tool.
• If the liner blocks access, remove push-clips with a trim removal tool and/or screws with a Phillips screwdriver, then fold the liner back.

Step 2: Remove the turn signal bulb socket

• Find the bulb socket labeled/positioned for the turn signal (typically the amber/turn position in the tail lamp).
• Grip the socket and rotate it counterclockwise about 1/4 turn by hand, then pull it straight out.
• If it’s tight, wiggle gently—don’t yank the wires.

Step 3: Replace the bulb

• Wear nitrile gloves.
• Pull the old bulb straight out of the socket (it’s a “push-in” style bulb, not threaded).
• Push the new rear turn signal bulb (amber) straight into the socket until fully seated.

Step 4: Reinstall the socket and test

• Reinsert the socket into the tail lamp, making sure the tabs line up.
• Twist clockwise by hand until it locks.
• Turn the ignition to ON and test the rear turn signal and hazards to confirm proper flashing.
• Tip: Fast blinking usually means a bulb issue.

Step 5: If you can’t remove the socket (alternate method: remove the tail lamp)

• Use a 10mm socket with a 1/4" drive ratchet to remove the tail lamp retaining nuts inside the trunk.
• Carefully pull the tail lamp straight rearward from outside the car to release the locating pins.
• Remove the turn signal socket as in Step 2, replace the bulb as in Step 3.
• Reinstall the tail lamp and tighten the nuts evenly: Torque to 3 Nm (27 in-lbs).

Step 6: Reassemble trunk trim

• Reposition the trunk liner.
• Reinstall push-clips by pressing them in by hand (use the trim removal tool to align them if needed).
• Reinstall any screws using a Phillips screwdriver.

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✅ After Repair

• Test left and right rear turn signals, hazards, brake lights, and reverse lights.
• Make sure the bulb socket seal is seated to prevent moisture in the lamp.
• Confirm the trunk liner is secured so it won’t rattle.

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💰 DIY vs Shop Cost

Shop Cost: $75-$160 (parts + labor)

DIY Cost: $10-$35 (parts only)

You Save: $65-$125 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1.0 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.