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Building an upgraded headlight harness

Discussion in 'Lighting' started by maconhurler, Oct 23, 2009.

  1. Oct 23, 2009 at 6:29 PM
    #1
    maconhurler

    maconhurler [OP] Well-Known Member

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    Maybe I'm an idiot and just can't find it. I thought I'd build a heavy duty headlight harness instead of buying one from suvlights.com for 73.00 plus 15 shipping.. Seems very straight forward and relatively easy, although I can't figure out what exactly I need to do with the whole switched-ground nonsense.

    I'd greatly appreciate any help.
     
  2. Oct 23, 2009 at 9:52 PM
    #2
    yosh2000

    yosh2000 Well-Known Member

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    why exactly do you want to do this? are you loosing voltage between your battery and light harness? i know when i checked mine years ago, there was no loss?
     
  3. Oct 28, 2009 at 6:17 PM
    #3
    maconhurler

    maconhurler [OP] Well-Known Member

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    Just got a chance to check tonight. Am showing no loss in voltage at all. 14.16 volts at battery and the same at the headlight.
     
  4. Oct 28, 2009 at 7:46 PM
    #4
    Viet2100

    Viet2100 Well-Known Member

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    Voltage isn't the problem, it's the amps/watts that might fry your factory harness.
     
  5. Oct 28, 2009 at 7:55 PM
    #5
    yosh2000

    yosh2000 Well-Known Member

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    the amps/watts of OEM H4 bulbs are going to fry the harness, this is the first i am hearing of this....

    i've read of people using these upgraded harness cause they believe they were losing voltage to their bulbs, therefore they would upgrade to increase output to its maximum. which is why i asked the OP the purpose of the upgrade. if he's still using OEM bulbs, and there is no voltage loss to the bulbs, why upgrade? spend the money elsewhere...like saving for a projector retro!!:D
     
  6. Oct 28, 2009 at 9:36 PM
    #6
    humanoid

    humanoid bite me

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  7. Oct 28, 2009 at 10:21 PM
    #7
    yosh2000

    yosh2000 Well-Known Member

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    ^, but again, why? if hes getting the same voltage at the lights as he is at the battery, what possibly could an upgraded harness do for him?!
     
  8. Oct 29, 2009 at 4:04 AM
    #8
    maconhurler

    maconhurler [OP] Well-Known Member

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    Deckplate Mod, Catz Fog lights, Roll Top Tonneau Cover, Pioneer Premier 800prs HU, 10" Kicker L7, Kicker 5 1/4 components, Polk dB 5x7s, Oznium superflux puddle lights and bed lights
    Using Silverstar Ultra bulbs. No increased wattage to the harness. I've been using Silverstars for a few years now and see no melting of the harnesses yet. Since I see no melting and no voltage drop, I'm with Yosh, why do it.
     
  9. Oct 29, 2009 at 7:24 AM
    #9
    viperstd

    viperstd Tacoma convert

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    to support running 100W bulbs?
     
  10. Oct 29, 2009 at 8:19 AM
    #10
    yosh2000

    yosh2000 Well-Known Member

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    nope, see above...
     
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