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    1985 Oldsmobile 88 3.8L 2BL OHV 6cyl

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    Jeep Wrangler/YJ 1987-1995 Repair Guide

    Brake Light Switch

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    REPLACEMENT



    1987-90 Vehicles

    See Figure 1



    Click image to see an enlarged view

    Fig. Fig. 1: Brake light switch installation-1987-90

    The brake light switch is attached to the pedal and pushrod with a bolt.The brake light switch is not adjustable.

    1. Remove the lower trim panel and ducts as necessary to gain access to the brake light switch.
    2.  
    3. Remove the pushrod bushings and nut.
    4.  
    5. Installation is the reverse of removal. Install new nuts on the rod bolt and tighten the inner nut to 25 ft. lbs. (34 Nm) and the outer nut to 75 inch lbs. (8.5 Nm).
    6.  

    1991-95 Vehicles

    See Figure 2



    Click image to see an enlarged view

    Fig. Fig. 2: Brake light switch installation-1991-95

    The brake light switch is mounted in the pedal support bracket and is operated by the pedal. The switch is secured in the bracket with a retainer.

    1. Disconnect the switch wires.
    2.  
    3. Thread the switch out of the retainer or rock the switch up and down and pull it rearward out of the retainer.
    4.  
    5. Installation is the reverse of removal. Adjust as necessary. Refer to the procedure which follows.
    6.  

    ADJUSTMENT



    1991-95 Vehicles
    1. Move the brake pedal forward by hand and check operation of switch plunger. The plunger should be fully extended when the pedal free play is taken up and the brake application begins. There should be a 1 / 8 inch clearance between the plunger and the pedal at this point. If the switch-to-pedal clearance is OK and the brake lights operate correctly, adjustment is not necessary.
    2.  
    3. If the switch plunger does not fully extend and the clearance between the pedal and the switch barrel is insufficient, adjust the switch position as follows:
      1. Grasp the brake pedal and pull it rearward as far as possible. The pedal should contact the switch barrel. Push it rearward in the retaining clip and stop it at the correct position.
      2.  
      3. Verify the brake light switch operation and proper clearance between switch and brake pedal.
      4.  

    4.  


    WARNING
    Make sure the brake pedal returns to the fully released position after adjustment. The switch can interfere with full pedal return if it is too far forward, which will result in brake drag.

     
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