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Led headlight resistors?

Discussion in 'Garage' started by Chops, Jul 13, 2019 at 6:22 PM.

  1. Chops

    Chops Junior Member

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    Canandaigua, ny
    First Name:
    Nick
    Truck Year:
    1983
    Truck Model:
    K20
    Engine Size:
    6.2
    I just bought some LED headlights for 83 that will not work, do I need resistors? If so which ones should i get?
     
  2. Craig 85

    Craig 85 Full Access Member

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    K30 SRW
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    454/TH-400/NP205
    Make sure the polarity is not reversed. Many LEDs won't work if this is not correct.
     
  3. Chops

    Chops Junior Member

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    Truck Year:
    1983
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    K20
    Engine Size:
    6.2
    They will come on theyre just extremely dim, if i hook it up straight to the battery they work great
     
  4. Frankenchevy

    Frankenchevy . Supporting Member

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    Did your previous headlights work full power?

    Check your wiring, particularly the grounds. Check voltage at the headlight plug while the truck is running.

    If the lights are coming on but just very dim, the electricity has a complete path, just not a very good one.

    Might be a good time to rework your front harness and possibly run relays for the lights.
     
  5. Chops

    Chops Junior Member

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    Joined:
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    Location:
    Canandaigua, ny
    First Name:
    Nick
    Truck Year:
    1983
    Truck Model:
    K20
    Engine Size:
    6.2
    Ill have to do that, just wasnt to sure if maybe i needed resistors. Figured id ask that before getting to deep into the wiring, thanks
     

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