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Question

Discussion in 'The Garage' started by 1978Blazerk5, Mar 3, 2007.

  1. 1978Blazerk5

    1978Blazerk5 1/2 ton status

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    Hey i have a 78 blazer, my question is i have a wire hanging there i am pretty sure its for a trailer brake if so i need a controler right. whats a good affordable controler
    Thanks


    heres a picture of the wire
    edit i am sorry there is already a thread on trailer brakes
    [​IMG]
     
  2. Slapperbar

    Slapperbar Retired Navy NDT Examiner Premium Member

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    Where's the other end? Looks like a primary wire. Look to see if it goes to the break light switch.
     
  3. 1978Blazerk5

    1978Blazerk5 1/2 ton status

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    i will tell ya right now i don't know much about this stuff
    according to the previous owner the truck had a trailer brake on it
     
  4. Slapperbar

    Slapperbar Retired Navy NDT Examiner Premium Member

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    Then it should be the Brake signal wire for the controller. Also known as the blue wire. put a volt meter on it and step on the brakes, with the ignition on. If you have voltage that's it.
     
  5. skyyk5

    skyyk5 1/2 ton status

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    You gotta follow the wire. It could be the supply wire for the controller, the wire that goes to the trailer, or the wire that comes from the pedal (control). But it looks like to big of a wire for the control.
     
  6. 1978Blazerk5

    1978Blazerk5 1/2 ton status

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    thanks guys i will check tomorrow morning
    By the way any recomendations on a good afordable contoler
     
  7. skyyk5

    skyyk5 1/2 ton status

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    I just picked up the one that looked the best. LOL
     
  8. 1978Blazerk5

    1978Blazerk5 1/2 ton status

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    where do i go to get a controller
     
  9. skyyk5

    skyyk5 1/2 ton status

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    Most auto parts stores have cheap ones. I got a good one from a Heavy truck center.
     
  10. Slapperbar

    Slapperbar Retired Navy NDT Examiner Premium Member

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  11. 1978Blazerk5

    1978Blazerk5 1/2 ton status

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    well i tested it today with a test light and it always has power what does that mean
     
  12. skyyk5

    skyyk5 1/2 ton status

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    It's the supply power that comes from the batt. and goes to the controller
     
  13. 1978Blazerk5

    1978Blazerk5 1/2 ton status

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    allrite so besides a controler is there anything else i will need?
    Like i said in a earlier post i dont know much about this stuff
     
  14. skyyk5

    skyyk5 1/2 ton status

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    The instructions with the controller will tell you more. My tow rig is a 03 sierra, so all i had to do was plug it in. You have to see if the wire from the controller to the trailer conector is still there / in good shape. and the wire from the brake pedal. Other than that It's simple.
     
  15. 1978Blazerk5

    1978Blazerk5 1/2 ton status

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    Well thank you for the help now all i need to do is buy a controller
     

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