Brake Light Switch

Discussion in 'Troubleshooting & Diagnosis' started by Buckman, Aug 1, 2020.

  1. Buckman

    Buckman New Member

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    Bought 73 with no brake light switch. Bought new one. After mounting attach one wire to hot side of fuse in box. Other wire should be spliced to ?
     
  2. Camaro Tim01

    Camaro Tim01 Veteran Member

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    brake lights........
    power...switch...load

    now you basically have power going to a switch.... everytime you press the brake you have 12v going to the other side of that switch... if you want to make your brake lights light when you press the pedal, you connect it to them.... if you want your dome light to come on everytime you press your brakes you can wire it there, might be sort of neat but the people behind you wouldnt like it very much

    thats for a 73
    https://nastyz28.com/camaro/wire/1973-camaro-fuseblock-wiring.html

    for a 73, white wire goes up to your direction signal switch, circuit 17 on diagram

    it gets power from fuseblock, goes to switch, out from brake switch to directional signal switch out from there to left/right brake lights at rear.

    directional signal switch is being used as a sort of "splitter" in this case to split that one wire coming into it into two wires going out ( one wire each brake light)
     
    Last edited: Aug 1, 2020
  3. Buckman

    Buckman New Member

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    Appreciate the info To make sure I get it right the first time, would it be ok to splice into the white wire as it comes out from the fuse box ?
     
  4. Camaro Tim01

    Camaro Tim01 Veteran Member

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    No
    only one side has power from fuseblock

    click the link for the wiring diagram and i will walk you through it
    keep checking back or refreshing page as ill edit my post as i explain

    click link...
    top of page shows your fuseblock
    underneath that look for " STOP LP SW" this is your stop lamp switch (brake light switch) in front of it is the plug that plugs into it
    the wires connecting to it are 14 ORG ( 14 gauge orange wire)
    and 14 NAT (WHT) ...(14 gauge white wire)

    the orange wire connects to your fuseblock
    the white wire ( follow the line in the diagram ) connects to your directional signal switch in location 17, which also has the letter "P" stamped into the plastic and is either the very first or very last depending upon how its oriented in the car

    so you shouldnt have to splice into anything, the white wire should be there to plug into the brake light switch....

    If you DONT have that wire there you can connect a wire from the brake switch and then to number 17 ( letter P , first or last wire) on the directional signal switch
    HOWEVER you need to find the wire from number 17 ( letter P , first or last wire) on the directional signal switch and see where it goes BEFORE doing any splicing because there should be a wire there and it should go to the brake switch

    THIS IS ALL ASSUMING YOU HAVE THE STOCK WIRING HARNESS FOR THT YEAR (1973)
    IF SOMEONE HAS CHANGED THAT TO SAY A 78 CAMARO WIRING HARNESS THROUGH THE YEARS SOMETIME, THEN THIS WONT WORK AS NOT ALL GO THROUGH THAT DIRECTIONAL SWITCH, IT DEPENDS UPON THE YEAR.
    if your wires are NOT orange and white, post back and tell me what color you have and we will try to track down what year harness is in it
     
    Last edited: Aug 1, 2020
  5. Camaro Tim01

    Camaro Tim01 Veteran Member

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    Does that make better sense ?
     
  6. Buckman

    Buckman New Member

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    I’ll know when I get to the garage today. 73 was redone years ago with LS1 and 6 speed added. I’m hoping still had original fuse box to follow your directions. Will be in contact. Thanks
     
  7. Buckman

    Buckman New Member

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    Hi Tim. I’m really puzzled. Any other alternative to wiring up this switch. First off I need to manufacture a bracket for the switch because of the conversion. Would it help if I send you a pic of fuse box ? Really appreciate your help.
     
  8. Jim Streib

    Jim Streib https://www.flickr.com/photos/121766713@N04/albums

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    You could put a switch in the brake line or design something using a brake switch from a motorcycle ?

    Brake Line Switch in a hydraulic brake line:

    [​IMG]

    https://www.napaonline.com/en/p/ATM...xf7JFKLRBpO3dRbXFYLvJi-2-CAsGUOEaAj72EALw_wcB

    Motorcycle brake switch:

    https://www.aliexpress.com/item/4000183759656.html

    On the brake light circuit at the brake switch one terminal will go to a fused constant 12V and the other terminal will attach to the white wire on the steering column connector which then goes up to the turn signal switch on the column.

    Jim
     
  9. Camaro Tim01

    Camaro Tim01 Veteran Member

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    I need to know a few things since someone has done an LS swap.
    1.has the steering column been changed ?
    2. Do your hazard lights work ?
    3. Do your turn signals work ?

    what we can do is what's supposed to be there if your column is original. We take power from fusebox, bring it to one side of the brake switch, connect another wire to the other side of the switch and find the P terminal on the directional signal pigtail that should be on your steering column and connect it to it. then you have it original and working.

    I need a pic of any connectors on your steering column, directional signal pigtail should be black and near the bottom mounted on the column, let's see what you got.

    I suspect someone has changed the fuseblock for the LS swap and for some reason didnt connect up the brake lights but thats a pretty weird thing to do....unless the steering column has been changed as well....

    The only thing we need the fusebox for is for power, no other wires for your brake lights go through it so thats not a biggie, the fuseblock is just a wall outlet supplying power in this case....
     
  10. Buckman

    Buckman New Member

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    Column appears to be original. Turn signals work front and back. Flasher button on column stiff. Does not click in and out like new. I’ll get pics in the morning for you. Thanks for your patience I appreciate the help
     

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