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Light bar not working

Discussion in 'Lighting' started by Tatum0806, Dec 23, 2016.

  1. Dec 23, 2016 at 8:45 PM
    #1
    Tatum0806

    Tatum0806 [OP] Well-Known Member

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    I hooked up all my wires to my light bar and when I turn the switch on it lights up but my light bar isn't coming on.. can anyone help me ?
     
  2. Dec 23, 2016 at 8:48 PM
    #2
    TACORIDER

    TACORIDER Just another statistic

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    Bad ground.
    Wire directly to the batt and hold it with your fingers to see if it works
     
    beaver_scott likes this.
  3. Dec 23, 2016 at 8:51 PM
    #3
    beaver_scott

    beaver_scott Well-Known Member

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    check to make sure the ground wire for the light is in a suitable spot for grounding?
     
  4. Dec 23, 2016 at 8:51 PM
    #4
    windsor

    windsor Just a guy

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    Type of switch? Wired with/without relay?
     
  5. Dec 23, 2016 at 9:00 PM
    #5
    Tatum0806

    Tatum0806 [OP] Well-Known Member

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    3" pro comp suspension lift 18x9 fuel hostages 33" Bfg ko2 Dual 10" kicker system
    It's the Tacoma blank switch.. yes it's wired with a relay
     
  6. Dec 23, 2016 at 9:03 PM
    #6
    Sandman614

    Sandman614 Snarky TWSS elf, Travis #hotsavannahdotcom, LRGRNR

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    1st check to make sure your light works by touching the leads straight to the battery. The relay is to protect the switch.

    2nd check your wiring skills/diagram.
     
    Midnighttaco08 likes this.
  7. Dec 23, 2016 at 9:13 PM
    #7
    Midnighttaco08

    Midnighttaco08 Traffic Direction Moonlighter

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    Yep.

    Was the harness a prewire deal? Just plug and play?

    Or did you wire your own relay. If so... the problem lies there... cross up somewhere.

    Where is it grounded?
     
  8. Dec 23, 2016 at 9:16 PM
    #8
    Tatum0806

    Tatum0806 [OP] Well-Known Member

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    It was a plug and play until I cut connecters off to get the wires through the firewall and so I just soldered them back blue-blue white-white and black-black and everything works fine but I get no light from the light bar
     
  9. Dec 23, 2016 at 9:17 PM
    #9
    Midnighttaco08

    Midnighttaco08 Traffic Direction Moonlighter

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    Can you hear the relay click when you hit the switch?

    Did you try to wire the light straight to the battery power to power - ground to ground?
     
  10. Dec 23, 2016 at 9:17 PM
    #10
    Tatum0806

    Tatum0806 [OP] Well-Known Member

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    No I hear no clicking
     
  11. Dec 23, 2016 at 9:18 PM
    #11
    Midnighttaco08

    Midnighttaco08 Traffic Direction Moonlighter

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    Some Bubble Gum and Duct-Tape IG** Midnighttaco03 Camburg uni-ball UCA w/ CO Rear Dakar with Fox 2.0 bottom overload removed GG G3D radius bar 50" roof mount GG G3 straight 32" front valence Rago fab bed clamp pod mounts 2 GG amber pod rear OTRATTW custom switch panel in sunglass holder K&N cold air Gibson exhaust Alpine INA-W900 head Mr. Marv box and amp rack IDQ-10 - Interfire Mono Focal fx45 component front Alpine type S Co-ax rear Homer taco TRD Grill GG LED low/high beam TRD seat covers OEM bed mat Weathertech floor mats with replacement TRD-OR decals Weathertech in-channel vents GG Flush mount pod replament fog light kit GG green ditch mount 3x2 pods Fog lights anytime Tailgate hoseclamp mod LED dome light LED map lights LED reverse lights LED license lights Rear window decals: Mall rated, Tacomaworld.com, U-Haul power tow, soundtech, mammoth.
    Possibly a bad relay. Some don't click... tho.
    Or wired wrong.
     
  12. Dec 23, 2016 at 9:19 PM
    #12
    Midnighttaco08

    Midnighttaco08 Traffic Direction Moonlighter

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    You can test it. Take a test light to the what should be the output of the relay to the light and see if there is current coming out of the relay.
     
  13. Dec 23, 2016 at 10:10 PM
    #13
    Sandman614

    Sandman614 Snarky TWSS elf, Travis #hotsavannahdotcom, LRGRNR

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    ^^
     
  14. Dec 23, 2016 at 10:37 PM
    #14
    Midnighttaco08

    Midnighttaco08 Traffic Direction Moonlighter

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    Right, but it seems OP needs a little more in depth than that, Dude.
     
  15. Dec 24, 2016 at 6:12 AM
    #15
    ChemDawg

    ChemDawg Well-Known Member

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    Did you check light before installing?
    I use a 9v battery to stick wires into before I get to installing part.
     
  16. Dec 24, 2016 at 3:54 PM
    #16
    NightProwler

    NightProwler Well-Known Member

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    I would also check the fuse/fuse holder if it was a plug and play harness. A couple harnesses I have tried that came with my light bars have had loose fuse holders. Those plug and play harnesses are cheap and unreliable. The ones that come with budget lights anyways. Build your own in the future. Or cut out the components such as fuse holder and relay, and put in better ones.
     
  17. Dec 24, 2016 at 5:04 PM
    #17
    TACORIDER

    TACORIDER Just another statistic

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    I've seen a few come without the fuse in the fuse holder so check that too.
     
  18. Dec 24, 2016 at 9:05 PM
    #18
    Tatum0806

    Tatum0806 [OP] Well-Known Member

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    3" pro comp suspension lift 18x9 fuel hostages 33" Bfg ko2 Dual 10" kicker system
    Update!!!! Light bar works fine.. what I did was took apart the replay and when I hit the little thing that turns the bar on it comes on.. what happening is the black white and blue wire that runs from the relay to the switch must not be working because my switch it lit up
     
  19. Dec 24, 2016 at 10:30 PM
    #19
    TACORIDER

    TACORIDER Just another statistic

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    Some relays do no use black as a ground like in wiring buildings, black is hot.
     

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