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brake controller testing question

Discussion in 'Towing' started by fman2039, Oct 18, 2010.

  1. fman2039

    fman2039 [OP] Member

    Joined:
    Oct 22, 2009
    Member:
    #24722
    Messages:
    9
    Gender:
    Male
    Texas
    Vehicle:
    10 PreRunner SR5
    AFE Prodry, LED interior lights, Fumot valve, B&M trans cooler
    First off--thanks to everyone for the great information. I've installed a Hopkins 47235 brake controller since I'll be pulling a popup camper for the first time in a few weeks (along with seven pin plug). I do not have a trailer to live test the install so I decided to measure the voltages at the controller.

    Red wire Blue wire (brake output)
    Brake pushed 12v 10-12v depending on %adjust (limited testing)
    No Brake 0V 6v <<???:eek::eek:

    Should there be 6v on the brake output with no brake input?? Is this just a "needs a load" issue? This is my first exposure to these controllers but this does not seem correct.

    Thanks for any help!!
     
  2. fman2039

    fman2039 [OP] Member

    Joined:
    Oct 22, 2009
    Member:
    #24722
    Messages:
    9
    Gender:
    Male
    Texas
    Vehicle:
    10 PreRunner SR5
    AFE Prodry, LED interior lights, Fumot valve, B&M trans cooler
    FYI -- Called Hopkins; they said that the controller is looking for the trailer brakes so it sends a voltage back there until it finds them; then stops until the brakes are depressed. So this is normal operations (i.e., it needs the load).
     
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