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Clock Cigarette Lighter and Hazard Switch Replacement
 
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Pelican Technical Article:

Clock Cigarette Lighter and Hazard Switch Replacement

Steve Vernon

Time:

1 hour1 hr

Tab:

$15 to $700

Talent:

**

Tools:

Philips head screwdriver, trim removal tool

Applicable Models:

Porsche 944 (1983-89)
Porsche 944 S2 (1989-91)
Porsche 944 Turbo (1986-89)
Porsche 944S (1987-88)

Parts Required:

Clock, bulb, hazard or cigarette lighter

Hot Tip:

Be careful not to crack the faceplate

Performance Gain:

Working clock and switches

Complementary Modification:

Clean your air vents

While the hazard switch is known for its longevity, the bulb on the clock radio plate has a tendency to burn out over the years, as well as the cigarette lighter failing. This article will show you how to remove the front trim piece to give you access to the clock, bulb, switch and cigarette lighter.

You will need to remove the HVAC unit to get access to the front trim piece. Make sure to use care when removing the trim pieces, as they are surprisingly brittle.

Begin by disconnecting the ground cable from the post on the battery.
Figure 1

Begin by disconnecting the ground cable from the post on the battery. This is also a good time to check the condition of the terminal and wiring, as our cable is starting to get a little corrosion (red arrow).

Be very careful when prying the faceplate off of the unit.
Figure 2

Be very careful when prying the faceplate off of the unit. It is just held in by clips on the sides but they tend to break very easily. Our project car's plate was already broken (red arrow) when we got the car.

Remove the knobs and sliders by pulling them straight off; you can probably do this with your hands for all of them but the fan speed control.
Figure 3

Remove the knobs and sliders by pulling them straight off; you can probably do this with your hands for all of them but the fan speed control. There is a small light behind the knob so you want to make sure you take this knob straight off. I recommend you use a trim removal tool and gently pry it away from the faceplate (red arrow).

With the knob off you can see the small fragile bulb in the center (red arrow).
Figure 4

With the knob off you can see the small fragile bulb in the center (red arrow).

Use your trim removal tool and gently pry both ends of the plate off.
Figure 5

Use your trim removal tool and gently pry both ends of the plate off. Then work your way around until the complete plate is off. Take your time and go slow. It will shock you how easy it is to break this plate.

With the plate off use a Philips head screwdriver and remove the four screws holding the unit in place (red arrows).
Figure 6

With the plate off use a Philips head screwdriver and remove the four screws holding the unit in place (red arrows).

Wiggle and slide the unit out from the dash.
Figure 7

Wiggle and slide the unit out from the dash. You do not need to remove the unit completely. Just get it out of the way of the trim piece behind it. If you do want to remove it there are three electrical connections on the rear. Two of the connections just pull straight off (red arrows). The far left one has a small plastic clip that must be released to allow it to be removed (yellow arrow).

Open the door and use a short Philips head screwdriver to remove the single screw holding the end trim plate on (red arrow).
Figure 8

Open the door and use a short Philips head screwdriver to remove the single screw holding the end trim plate on (red arrow).

Next, remove the three Philips head screws under the end plate (red arrows).
Figure 9

Next, remove the three Philips head screws under the end plate (red arrows).

Using a trim removal tool remove the small trim piece beside the vent and then the two Philips head screws (red arrows).
Figure 10

Using a trim removal tool remove the small trim piece beside the vent and then the two Philips head screws (red arrows).

Carefully turn the small vent cover over the temperature sensor 90 degrees counter clockwise and remove it (red arrow).
Figure 11

Carefully turn the small vent cover over the temperature sensor 90 degrees counter clockwise and remove it (red arrow).

Remove the Philips head screw under the cover.
Figure 12

Remove the Philips head screw under the cover.

Carefully remove the vents and trim piece that covers the clock (red arrow).
Figure 13

Carefully remove the vents and trim piece that covers the clock (red arrow). Do not force this piece. If it is hung up on something use your trim removal tools and gently free it up.

When reinstalling the vents make sure that the vent control slips into the adjuster inside the vent (red arrow).
Figure 14

When reinstalling the vents make sure that the vent control slips into the adjuster inside the vent (red arrow).

You can now replace the bulb by pulling it from its mount (yellow arrow) or remove the clock by gently prying it from the trim piece (red arrows).
Figure 15

You can now replace the bulb by pulling it from its mount (yellow arrow) or remove the clock by gently prying it from the trim piece (red arrows). The cigarette lighter is held in by a clip. The hazard switch also unclips from its plastic tabs. Installation is the reverse of removal.


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