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Fog light wiring question

Discussion in 'Lighting' started by MowTaco, Jul 12, 2010.

  1. MowTaco

    MowTaco [OP] Well-Known Member

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    Hello all
    First of all, sorry for creating another thread about this. I found it earlier and now I can't find the same thread again after searching a few places.
    Anyway, I just bought a cheap set of fog lights and was wiring them up when i found the thread on here about using a fuse tap to power them. My question is, if the fuse slot is only powered with the ignition on, do I still need the relay? I suppose this sounds stupid but it made sense to me, it seemed kind of redundant to use both. Thanks
     
  2. IamTacO

    IamTacO red balls got me!

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    seems like the relay would be redundant to the fuse slot.
     
  3. skytower

    skytower Well-Known Member

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    It depends on the rating of the fuse you're tapping. Don't exceed its reting(tapped circuit load+fog lights=less than fused circuit). If the switch you are using can handle the amps of the entire circuit, you don't need a relay at all.
    Don't put in a bigger fuse either. You'll fry the wires/truck sooner or later.
     
  4. NAAC3TACO

    NAAC3TACO Well-Known Member

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  5. larryde09

    larryde09 Well-Known Member

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    The fuse you're tapping is likely just a "control" signal. The relay will handle the amps for the lights. I'd recommend using a relay...redundant relays are ok and typical practice. It's safer than exceeding the current capability of the existing wire.
     
  6. NAAC3TACO

    NAAC3TACO Well-Known Member

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    +1 I tapped into one of the low beam fuses. I think it was 10 amp. Very good advice to use the relay.
     
  7. brutalguyracing

    brutalguyracing BIG DADDY

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    F.U> GUYZ
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    use the relay
     
  8. MowTaco

    MowTaco [OP] Well-Known Member

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    Alright I'll go get a relay too. I already got the fuse taps. Thanks guys!
     
  9. BradleyScottETC

    BradleyScottETC Class IV Category 8 Elite VIP Member (Only)

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