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Thread: Headlights

  1. #1
    Quinten's Avatar
    Quinten is offline Full Member
    Name: Quinten
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    Headlights



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    Looking to upgrade lights on the merc 817 it's 30yrs old with glass headlights.
    Does anyone have any ideas
    Thanks
    Quinten

  2. #2

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    Depends how much you want to spend, and if you want brighter main beam which is easy, or brighter dipped beam? Quality bulbs will make a difference. Latest Osram nightbreakers or similar modern bulb.
    If you want to spend a lot, take a look at JW Speaker LED headlights.

  3. #3
    Quinten's Avatar
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    Name: Quinten
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    Thanks Mark I don't mind spending a bit on it thanks but would probably need an auto electrician to install.
    Cheers

  4. #4

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    To improve lighting, I usually replace the stock bulbs with either Osram Night Breakers or Phillips Extreme uprated bulbs and that makes a noticable difference. I do this with just about every vehicle (van or car) as a matter of course as good lighting is very important.
    On the majority of vehicles (especially older ones), these are a simple DIY swap.

    Another cause for poor lighting is low voltage at the bulb due to poor wiring, either degraded over time or from new. You could check you are getting a decent voltage at the bulb (compare it to the battery voltage when the engine is running) and if low, it is not too tricky a job to upgrade the loom to get the voltage back at a good level. This can make a noticable difference if you are suffering this issue.

    Changing the actual headlight fitting on most vehicles is not practical. Some vehicles do have different options depending on the model. For example on the VW T5, there was a standard headlight that used a basic H4 twin filament bulb (a old but common realitively low performance bulb) but the Caravelle models used as standard a twin headlight projector style headlight fitting and it is possible to swap lights to improve. I replaced the physical headlights on my T5 with Caravelle ones and fitted uprated Bulbs, as well as modifying the wiring so I had 4 bulbs on when on Main Beam instead of the standard 2 and that made a tremendous difference.
    There are some aftermarket headlights around for some vehicle that are made to just look good but work very poorly - clearly ones to avoid (the VW T4 scene is plagued with fancy but rubbish aftermarket headlights)

    Headlight swapping is probably not an option on the Mercedes, but you could fit auxilary lighting maybe? the Traditional "rally style" spotlights would likely suit a vehicle of that era very nicely. Or you could think about an LED lightbar for a more modern solution.
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  5. #5

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    Another vote for Osram nightbreaker unlimited bulbs - I fit them as a matter of course to all my vehicles (Except the land rover, it doesnt go fast enough to need them!)
    Another obvious thing to check is the condition of the reflector - if its tarnished, or 'dulled', it will make a big difference, but still pass MOT OK.

    Start with the easy options!

    Good Luck,
    Dave.

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