Hi, I hope someone can help me. I have a 93 f-150 5.8 engine. My brake lights are not coming on until i almost have the break petal to the floor. I have replaced the brake light switch and it doesn't help. I have tried bending the metal part of the switch for an adjustment and it makes it worse or doesn't seem to do anything. I would just leave it alone, but i have been almost rear ending a few times lately and I am getting frustrated. I looked at the hayes repair book and it doesn't really help. Any help would be great.

 

I do know that with these trucks the brake lights dont come on as soon as you touch the pedal. I'm not really sure why yours is so delayed. I would think that if you tried a little bending for adjustment that would work. I know the 85 and the two 95 F150 trucks I have had the lights didn't come on until the pedal was half way down.

 

thanks for the info. i have tried to bend it and it doesn't seem to work. i actually have broken 2 switches trying to make them work.

 

This may be why our old 85 was rearended twice one 95 once and the other 95 twice. Maybe it is an inherant problem with the way the brake lights are set up. I also think it is because people expect these old trucks to get out of thier way quicker especially when turning.

 

I do not think the switch is adjustable.

Stoplamp Switch

The mechanical stoplamp switch assembly, installed on the pin of the brake pedal arm, straddles the master cylinder push rod, but is not attached directly to the push rod. The switch assembly moves with the pedal arm when the brake pedal is depressed.

The switch actuating pin is held by spring pressure against the rear end of the push rod. Because of the slight clearance between the eye of the master cylinder push rod and the brake pedal arm pin, the pin and the switch move forward slightly before the push rod moves when the pedal is depressed. This relative movement between the switch and the end of the push rod moves the actuating pin rearward in the switch, closing the switch contacts and completing the circuit to the stoplamps.

When the brake pedal is released, the switch moves rearward in relation to the push rod. The spring in the switch returns the actuating pin to its normal position, opening the switch contacts and interrupting the circuit to the stoplamps.

Stoplamp Switch Assembly
http://i54.photobucket.com/albums/g9...rakeSwitch.gif

Removal and Installation

1. Disconnect wire harness connector from switch.
NOTE:
Locking tab must be lifted before connector can be removed.
2. Remove the hairpin retainer. Slide stoplamp switch, push rod, white nylon washer and bushing away from the pedal. Remove washer and then the switch by sliding switch up or down.

NOTE:
Since the switch side plate nearest the brake pedal is slotted, it is not necessary to remove the brake master cylinder push rod and black bushing from the brake pedal pin. On vehicles equipped with speed control, the spacer washer is replaced by the dump valve adapter washer assembly.

http://i54.photobucket.com/albums/g9...akeSwitch2.gif

3. Position switch so that the U-shaped side is nearest the pedal and directly over/under the pin. Then, slide switch up/down trapping the master cylinder push rod and black bushing between the switch side plates.

Push switch and push rod assembly firmly toward brake pedal arm. Assembly outside white plastic washer to pin. Install hairpin retainer to hold entire assembly.

CAUTION:
Do not substitute other types of pin retainers. Use only factory-supplied hairpin retainer.

4. Install connector to the switch.
5. Check stoplamp switch for proper operation.

CAUTION:
Stoplamp switch wire harness must have sufficient length to travel with switch during full stroke of pedal. If wire length is too short

 

thank you for the info.