Upgrade headlight loom

Discussion in 'Mk2' started by Matt Golf, Oct 6, 2020.

  1. Matt Golf Forum Member

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    Found out why my lights not working. Part of the loom melted, it was an upgrade type from about 15 years ago.

    Where is the best place to get one now - any recommended suppliers?

    And do they only go on the headlamps, not the inner spots?

    Thanks

    Matt
     
  2. Tristan

    Tristan Paid Member Paid Member

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    Can be either or both, when I make them I use 3 relays, one for heads, one for dips, one for spots.

    They are often on the likes of eBay.
     
  3. costel1969

    costel1969 Paid Member Paid Member

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    Yep picked up a decent one one eBay it was just for the dims only but that does me fine
     
  4. davidut5 Forum Member

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    Why use a relay for spots? There is already one on the fuse box, not a big deal if the voltage drops on them.
     
  5. costel1969

    costel1969 Paid Member Paid Member

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    I think the biggest problem on the Mk2's was how poor the dipped beams were due to voltage drop and more often than not you're generally driving on dipped beams rather than the full beams. If you upgrade/rewire to get the dipped beams sorted you should be good - I agree with you regarding the spots they're not really the problem
     
  6. Rustbuster

    Rustbuster Paid Member Paid Member

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    I’ve always wondered about these and considered fitting them. But question is, do they really work and make an appreciable difference? Ta
     
  7. Matt Golf Forum Member

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    Rustbuster its literally light and day. I could not believe the difference it made to dipped and main beam.
     
  8. davidut5 Forum Member

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    Big difference, from 12v on the bulb to 14v, light output increased a lot on my 91 jetta.
     
  9. costel1969

    costel1969 Paid Member Paid Member

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    Yes indeed they make a big difference - one issue I've noticed with my upgrade is the fact that I can no longer just have the parking lights (and they did indeed indicate that on the paperwork with the loom) - doesn't happen with all the Mk2's but it has on mine.
     
  10. Rustbuster

    Rustbuster Paid Member Paid Member

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    Cheers guys. Is any particular make/supplier better than the other. I’ve seen them on eBay and Heritage stock them. I’ll have to get some organised as we plunge into another deep, dark winter.
     
  11. costel1969

    costel1969 Paid Member Paid Member

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  12. Tristan

    Tristan Paid Member Paid Member

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    Because I could, and because I Iike driving at night, and because any voltage drop is bad.
    Any of the cars I fitted looms to had fantastic light afterwards. One in particular, the owner was daily-ing a mk7R with full Xenon, and reckoned the mk2 had better lights.
     
  13. davidut5 Forum Member

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    Its illegal to have them on if there is no fog in Romania.
    Did not pay much attention to them, but got a pair of aftermarket ones just for the extra option:lol:, i mean the wiring was almost all there and the button, got the fog lights and made a loom for them.
    I dont use them much, unlike dipped beam witch is almost always on. I will measure the voltage drop someday, just for curiosity!:)
    I have doubled the thick wires on the battery/alternator/starter this too was a big improvement. The charging voltage on the battery and cranking speed much improved. But voltage drop is everywhere, these are old cars. Even 10-15 years newer cars have voltage drop.
     
    Last edited: Oct 7, 2020
  14. costel1969

    costel1969 Paid Member Paid Member

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    Yep if you encounter Tristan driving the Mk2 at night - you're getting a free x-ray
     
  15. Tristan

    Tristan Paid Member Paid Member

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    By spots, I meant the inner pair on the grille, that come on with heads, not the (laughably useless) lower fog lights.

    @Costel, haha, not quite, I'd be anal about focusing them properly with my beamsetter, and I still use 60/55 watt bulb.
    Osram Nightbreaker being my bulb of choice.
     
  16. costel1969

    costel1969 Paid Member Paid Member

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    On my old 16v it had 100/80's high beams (I didn't install them myself but they were relayed separately) but I'm pretty sure I permanently blinded all kinds of wildlife at night when she was on full beam.
     
  17. H8V

    h8v Forum Member

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    Much better to make them yourself, and quite likely better quality too.
    A couple of decent relays, fuses, cable and a few connectors.
    ....and much more satisfying!

    oh, and measure the voltage before and after to convince yourself.
     
  18. costel1969

    costel1969 Paid Member Paid Member

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  19. costel1969

    costel1969 Paid Member Paid Member

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    How the hell did I manage to put my reply into your post [><]...old age sucks anyways that's why I bought a loom for mine
     
  20. davidut5 Forum Member

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    Spared no expense when i made my loom, still lost 0.3v to the bulb!:idea::lol:
     

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