GM: Electra/Park Avenue/Ninety-Eight 1990-1993

Signal and Marker Lights

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Fig. Fig. 1 Representative front end lighting components



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Fig. Fig. 2 Rear end lighting wiring harnesses



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Fig. Fig. 3 Center high-mounted stop lamp assembly-1990 vehicles



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Fig. Fig. 4 Center high-mounted stop lamp assembly-1991-93 vehicles

REMOVAL & INSTALLATION



Front Turn Signal and Parking Lights
Except 1991-93 park avenue
  1. Access the bulb socket from behind the front bumper.
  2.  
  3. Remove the socket from the lamp by turning counter-clockwise. Then remove the bulb from the socket.
  4.  
  5. If lamp assembly is necessary, remove the fasteners and remove the lens assembly from the bumper.
  6.  

To install:

  1. Install the lamp assembly if removed.
  2.  
  3. Install the bulb to the socket, then install the socket to the lamp and turn clockwise to seat.
  4.  

1991-93 park avenue
  1. Remove the thumb screws, and pull the headlamp unit up off the tab and out.
  2.  
  3. Disconnect the headlamp connectors.
  4.  
  5. Rotate the desired socket counterclockwise and remove from the lamp assembly.
  6.  
  7. If servicing the lamp/lens assembly, remove other bulbs from composite unit.
  8.  

To install:

  1. Install the bulb to the socket, then install the socket to the lamp and turn clockwise to seat.
  2.  
  3. Connect the connectors.
  4.  
  5. Install the lamp assembly on the tabs and install the thumb screws.
  6.  
  7. Check operation of all front exterior lamps.
  8.  

Side Marker Lights
  1. On 1990 Ninety-Eight, remove the headlamp bezel.
  2.  
  3. On 1991-93 Park Avenue, remove the side marker lens assembly.
  4.  
  5. On others, access the bulb socket from behind the front bumper. If lamp assembly is necessary, remove the fasteners and remove the lens assembly from the bumper.
  6.  
  7. Remove the socket from the lamp by turning counterclockwise. Then remove the bulb from the socket.
  8.  

To install:

  1. Install the lamp assembly if removed.
  2.  
  3. Install the bulb to the socket, then install the socket to the lamp and turn clockwise to seat.
  4.  
  5. Install the lens or bezel.
  6.  

Rear Turn Signal, Turn Signal and Parking Lights
  1. Open the trunk lid and remove the rear panel liner.
  2.  
  3. On all except 1991-93 Ninety-Eight, remove the fasteners and remove the lens assembly from the panel. Otherwise, unscrew the bulb housing-to-tail lamp screws.
  4.  
  5. Remove the desired bulbs from their housings.
  6.  

To install:

  1. Install the bulbs to the housings.
  2.  
  3. To prevent water intrusion into the trunk area, seal the mating surface of the lens to sheet metal with sealer. Install the lens assembly or bulb housing assembly.
  4.  
  5. Install the rear panel liner.
  6.  

Center High-Mounted Brake Light (CHMSL)
  1. If necessary, remove the the rear seat.
  2.  
  3. Remove the chmsl trim panel.
  4.  
  5. Remove the socket from the housing by turning counterclockwise.
  6.  
  7. Remove the bulb from the socket.
  8.  

To install:

  1. Install the bulb to the socket.
  2.  
  3. Install the socket to the housing by turning clockwise. Check operation of the bulb.
  4.  
  5. If all is satisfactory, install the trim panel.
  6.  
  7. Install the seat if removed.
  8.  

License Plate Lights
  1. Remove the license plate lamp-to-bumper screws and remove the lens.
  2.  
  3. Remove the socket from the lamp assembly.
  4.  
  5. Remove the bulb from the socket.
  6.  

To install:

  1. Install the bulb to the socket.
  2.  
  3. To prevent water intrusion into the trunk area, seal the mating surface of the lens to sheet metal with sealer. Install the socket to the lens assembly.
  4.  
  5. Install the lens assembly to the bumper.
  6.  

 
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