I really need some detailed instructions on hoe to replace this darn thing,someone posted removal and installation directions,which were great as soon as I get to what i am looking for, I need to know exactly where this switch is. I see it is by the brake pedal,but after looking I cannot seem to find it. Do I need to remove other parts and what do i need for tools and what is a leatherman ? My lights are working weird somtimes I press the lights come on then off sometimes they don't come on plus i got a problem with the interlocking mecanism(brake/shifter thing)It seems the brake pedal is very sensitive to the touch,would I be better off taking it to the dealer to have it done? If so how much would it run,I already bought the part(20.00 @ L/M Dealer)You guys I need you more than ever now,If I can get all these maitence issues outta the way I'll have time for more MODS !!! thanks in advance
brake light sending switch
- Thread starter viiiball
- Start date
RE: brake light sending switch
Here's the official manual version - and it doesn't get much more
detailed than this:
Stoplamp Switch, Mechanical
The mechanical stoplamp switch assembly is installed on the pin of
the brake pedal arm, so that it straddles the master cylinder push
rod. The switch assembly is a slip fit on the pedal arm pin, and the
switch pressure plate mates with the flat on the master cylinder push
rod. The switch assembly travels with the pedal arm but maintains
alignment with the flat on the push rod at all times.
The brake pedal arm pin and plastic bushing has a designed in
clearance with the eye of the master cylinder push rod. Because of
this clearance, whenever the brake pedal is pushed forward, the
stoplamp switch frame moves forward pulling the whole assembly
forward. During that movement, the push rod flat pushes the switch
pressure plate and actuating pin rearward, closing the switch
contacts. This completes the circuit to the stoplamps.
When the brake pedal is released, the spring in the stoplamp switch
returns the actuating pin to its normal position and the circuit to
the stoplamp opens.
Removal
1. Disconnect the wire harness at the connector from the switch.
NOTE:
Locking tab on connector must be lifted before connector can be
removed.
2. Remove the hairpin retainer, slide the stoplamp switch, the
push rod and the nylon washers and bushing away from the pedal, and
remove the switch by sliding the switch up/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 one
spacer washer from the brake pedal pin.
Installation
1. 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 blade bushing between the
switch sideplates. Push switch and push rod assembly firmly toward
brake pedal arm. Assemble outside white plastic washer to pin and
install hairpin retainer to trap whole assembly.
CAUTION:
Do not substitute other types of pin retainers. Replace only with
production hairpin retainer.
2. Assemble the wire harness connector to the switch and install
the wires in the retaining clip.
3. Check stoplamp switch for proper operation.
NOTE:
Stoplamp switch wire harness must have sufficient length to travel
with switch during full stroke of pedal. If wire length is
insufficient, reroute harness or service as required.
http://mark8.org/users/driller/pics/brakepedal.jpg
http://mark8.org/users/driller/pics/brakeswitch.jpg
And one more illustration:
http://mark8.org/users/driller/pics/BOOswitch.jpg
It is easy to replace, but watch for a bad harness or brittle wires
and be sure the wire harness will allow FREE travel throughout the
range of movement of the brake pedal.
Here's the official manual version - and it doesn't get much more
detailed than this:
Stoplamp Switch, Mechanical
The mechanical stoplamp switch assembly is installed on the pin of
the brake pedal arm, so that it straddles the master cylinder push
rod. The switch assembly is a slip fit on the pedal arm pin, and the
switch pressure plate mates with the flat on the master cylinder push
rod. The switch assembly travels with the pedal arm but maintains
alignment with the flat on the push rod at all times.
The brake pedal arm pin and plastic bushing has a designed in
clearance with the eye of the master cylinder push rod. Because of
this clearance, whenever the brake pedal is pushed forward, the
stoplamp switch frame moves forward pulling the whole assembly
forward. During that movement, the push rod flat pushes the switch
pressure plate and actuating pin rearward, closing the switch
contacts. This completes the circuit to the stoplamps.
When the brake pedal is released, the spring in the stoplamp switch
returns the actuating pin to its normal position and the circuit to
the stoplamp opens.
Removal
1. Disconnect the wire harness at the connector from the switch.
NOTE:
Locking tab on connector must be lifted before connector can be
removed.
2. Remove the hairpin retainer, slide the stoplamp switch, the
push rod and the nylon washers and bushing away from the pedal, and
remove the switch by sliding the switch up/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 one
spacer washer from the brake pedal pin.
Installation
1. 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 blade bushing between the
switch sideplates. Push switch and push rod assembly firmly toward
brake pedal arm. Assemble outside white plastic washer to pin and
install hairpin retainer to trap whole assembly.
CAUTION:
Do not substitute other types of pin retainers. Replace only with
production hairpin retainer.
2. Assemble the wire harness connector to the switch and install
the wires in the retaining clip.
3. Check stoplamp switch for proper operation.
NOTE:
Stoplamp switch wire harness must have sufficient length to travel
with switch during full stroke of pedal. If wire length is
insufficient, reroute harness or service as required.
http://mark8.org/users/driller/pics/brakepedal.jpg
http://mark8.org/users/driller/pics/brakeswitch.jpg
And one more illustration:
http://mark8.org/users/driller/pics/BOOswitch.jpg
It is easy to replace, but watch for a bad harness or brittle wires
and be sure the wire harness will allow FREE travel throughout the
range of movement of the brake pedal.