1. Welcome to the new home for MySportTrac.com!

    Please click here to find all the info about the move to the new site!

    To access your account you will need to reset your password here

Third brake light wire or CHMSL wire ???

Thread in 'Maintenance / Service' started by JohnnyB, Jun 24, 2018.

  1. JohnnyB

    JohnnyB Well-Known Member 2nd Gen Owner V8 Engine

    Messages:
    986
    Likes Received:
    1
    Joined:
    Nov 1, 2000
    Location:
    NY
    Well I finally got pulled over for never hooking up my 3rd brake light on the Leer cap I put on the sport trac. Now I am a week away from taking a long drive to another state for a little vacation for a few days and need to hook it up to avoid any future problems.

    I have read on here about thrid brake light wire between the spare tire and the bumper ...... not there! I have been searching the internet for the elusive third brake like wire which is also known as the Center High Mount Stop Light. Explorer forum said it might be under the engine compartment fuse box. Small wire either capped or taped off not connected to anything. I believe is is supposed to be a green or light green wire. Any ideas of where this thing is???? Or am I stuck running a wire from the ST 3rd Bake Light to the cap 3rd brake light???

    Help please ....... Thanks
     
  2. Mark K 2

    Mark K 2 Well-Known Member 1st Gen Owner V6 Engine

    Messages:
    2,521
    Likes Received:
    5
    Joined:
    Mar 22, 2002
    Location:
    Baldwin, WI
    Should be a light green wire, about 20 gauge, six inches long, and capped with a black insulator. Labelled CHMSL.
     
  3. JohnnyB

    JohnnyB Well-Known Member 2nd Gen Owner V8 Engine

    Messages:
    986
    Likes Received:
    1
    Joined:
    Nov 1, 2000
    Location:
    NY
    Where exactly?
     
  4. Mark K 2

    Mark K 2 Well-Known Member 1st Gen Owner V6 Engine

    Messages:
    2,521
    Likes Received:
    5
    Joined:
    Mar 22, 2002
    Location:
    Baldwin, WI
    Dangling between the rear license plate area and the spare tire.
     
  5. JohnnyB

    JohnnyB Well-Known Member 2nd Gen Owner V8 Engine

    Messages:
    986
    Likes Received:
    1
    Joined:
    Nov 1, 2000
    Location:
    NY
    Its not there on my 2010.
     
  6. Todd Z

    Todd Z Well-Known Member 2nd Gen Owner V6 Engine V8 Engine

    Messages:
    20,410
    Likes Received:
    32
    Joined:
    Sep 21, 2003
    Location:
    Suffolk County (Long Island), NY
    GEN 2 doesn't have this wire..... Dam ford !!! people have run wires from inside the truck third brake light and others from the 4 pin trailer connector. .. Sucks... Crappy design...
     
    JohnnyB likes this.
  7. JohnnyB

    JohnnyB Well-Known Member 2nd Gen Owner V8 Engine

    Messages:
    986
    Likes Received:
    1
    Joined:
    Nov 1, 2000
    Location:
    NY
    Yes that sucks big time. I ended up connecting to the 4 pin trailer harness but it flashes with the right directional. Ford dropped the ball on that one. Maybe some time I will have time to go all the way to the third brake light and do it right.
     
  8. BBB

    BBB Member

    Messages:
    10
    Likes Received:
    4
    Joined:
    Jun 16, 2018
    Location:
    S.E.PA
    You may be able to pull the CHMSL and see what color wires are hooked to it's connector that then run down the C-Pillar, then splice into it under the door sill. Not sure if it runs down the C-Pillar or what side it may be on, just a thought.

    On newer Ford pick-ups they provide extra terminals on the brake light switch located on or near the brake peddle. The company I work for installs caps and we are always looking for the CHMSL wire ;)
     
    JohnnyB likes this.
  9. JohnnyB

    JohnnyB Well-Known Member 2nd Gen Owner V8 Engine

    Messages:
    986
    Likes Received:
    1
    Joined:
    Nov 1, 2000
    Location:
    NY
    Thanks a good idea. I will try that out when I have some time. Thanks
     

Share This Page