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Replacing Your Tail Light Bulbs and Assembly
 
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Pelican Technical Article:

Replacing Your Tail Light Bulbs and Assembly

Steve Vernon

Time:

2 hours2 hrs

Tab:

$4 to $400

Talent:

**

Tools:

8mm socket

Applicable Models:

Mercedes-Benz W124 (1986-95)

Parts Required:

Taillight assembly, taillight bulbs

Hot Tip:

Clean the bulb holder contacts prior to installation of the bulb

Performance Gain:

Working tail lamps

Complementary Modification:

Preform a complete vehicle bulb check

If your rear lights have stopped working the first place to check is the fuses and then after that the bulbs. The bulbs can burn out as well as the sockets can get corrosion in them over time which can lead to a bulb not working. Make sure you clean all the sockets with a small wire brush or some Emory paper before installing new bulbs. The tail light housing is a single weather proof piece and if it gets cracked or damaged you will need to replace the whole unit.

You will need to fold down the rear wheel well panel.
Figure 1

You will need to fold down the rear wheel well panel. Use the release handles (red arrow) and fold the panels inward.

On the left side you will need to remove the spare tire by unscrewing the center puck and pulling the tire out from the wheel well.
Figure 2

On the left side you will need to remove the spare tire by unscrewing the center puck and pulling the tire out from the wheel well.

On both sides there is a plastic housing that holds the bulbs.
Figure 3

On both sides there is a plastic housing that holds the bulbs. Squeeze the clip together (red arrow) and pull the bar out and down.

The light bar containing the bulbs (red arrow) sits in a groove on the bottom of the housing (yellow arrow) and once released is easy to remove.
Figure 4

The light bar containing the bulbs (red arrow) sits in a groove on the bottom of the housing (yellow arrow) and once released is easy to remove. Use care with the clips as they dry out over time.

The bulbs are simple push and turn to remove or install.
Figure 5

The bulbs are simple push and turn to remove or install. The sockets can get corrosion in them over time which can lead to a bulb not working. Make sure you clean all the sockets with a small wire brush or some Emory paper before installing new bulbs.

The tail light housing is a complete unit and must be removed as such.
Figure 6

The tail light housing is a complete unit and must be removed as such.

With the bulb bar removed use an 8mm socket and remove the four nuts holding the unit to the vehicle (red arrows).
Figure 7

With the bulb bar removed use an 8mm socket and remove the four nuts holding the unit to the vehicle (red arrows). You can also see the wiring connection for the light bar (yellow arrow) if you need to replace it.

The housings gasket can get stuck to the body over time and you can gently push from the mounting studs on the interior while using a trim removal tool (if necessary) to gently pry it away from the metal.
Figure 8

The housings gasket can get stuck to the body over time and you can gently push from the mounting studs on the interior while using a trim removal tool (if necessary) to gently pry it away from the metal. Installation is the reverse of removal.




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Page last updated: Fri 11/17/2017 02:49:48 AM