Electrical help

Discussion in 'Wiring' started by Eric Navr, May 18, 2019.

  1. Eric Navr

    Eric Navr New Member

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    I just installed a wfco-wf8735 in my cargo trailer for 30amp shore power and to be able to use the onboard 12vdc lights already installed. My question is this..If anyone is familar with this unit, after hooking up the 12v olt side, I went thru and used a tester on the 12vdc circuits and found that I had power coming at the pigtail ends that were not hooked up or had a fuse installed on the board, is this normal for this unit?
     
  2. tombiasi

    tombiasi Well-Known Member

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    Sorry, I am not visualizing what you are measuring/seeing.
     
  3. rabird

    rabird Howdy!

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    if there is no fuse on a particular colored wire then its pigtail should not be HOT.
     
  4. Eric Navr

    Eric Navr New Member

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    Thats what i thought, someone I know said that maybe because there is open circuit light on the board for each fuse that it might cause that.....didn't really feel comfortable with that answer. Thanks......any ideas why that is happening??
     
  5. WrkrBee

    WrkrBee Well-Known Member

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    Guess it could have a high resistance bulb across the fuse legs that would light when the fuse blew. You could get a voltage reading, but there would be almost no current. I had a camper brake light that would not work, but you could see the voltage rise and fall reading through the light ground. I had a bad factory wire nut connection that let enough current through to read the voltage, but not enough to light a brake light.
     
  6. Eric Navr

    Eric Navr New Member

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    Thanks, maybe I'll put a load on one of the unfused circuits and see what happens. Thanks
     
  7. Eric Navr

    Eric Navr New Member

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    Just put a fog light on pigtail to test, and like you said, showing voltage but not enough current to power the light....no fuse in place and the open circuit diode lit up.Thanks Wrkrbee!
     
  8. WrkrBee

    WrkrBee Well-Known Member

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    Even a blind squirrel finds a nut every once in awhile.
     
  9. Eric Navr

    Eric Navr New Member

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    Lol
     
  10. brwarrior

    brwarrior Active Member

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    There are blown fuse indicator LEDs in the power center and you're seeing the voltage getting through it.
     
  11. Eric Navr

    Eric Navr New Member

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    Thanks,
     

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