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Thread: higher watt bulbs in factory foglights?

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    higher watt bulbs in factory foglights?

    Hey everyone,
    I was wondering if anyone has any experience running higher wattage bulbs in the factory fogs (BE specifically, but I doubt subaru changed the wire gauges/relay specs much on other models)? I was thinking of using Hella yellowstar bulbs, which are 85 watts.

    I'll be running 100w's in the Hella driving lights, which has the wire harness to support it.
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    t3h ch33se Wiscon_Mark's Avatar
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    Upgrade the wiring, you should be fine.

    Is the lense assembly glass or plastic in the BE fogs?

    Either way, I would think it'd be able to handle the heat fine.
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    Re: higher watt bulbs in factory foglights?

    I just put 100 watt Hella Yellowstars in my factory fogs. I do have better wires (up until the plug/pig tail to the fog), better relay, and better fuse. The fogs are independently wired. Do you think anything bad will happen if I am just using the fogs when needed?
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    Re: higher watt bulbs in factory foglights?

    There's a chance of melting the housing if its made of plastic other than that it should be fine. What about doing a 55w hid?

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    Re: higher watt bulbs in factory foglights?

    I don't really want to spend the money on a HID. Would 85W have a chance of melting the housing too?
    My cars:
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    t3h ch33se Wiscon_Mark's Avatar
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    Re: higher watt bulbs in factory foglights?

    I really doubt you'd melt the housing. I've had no problems with 100watt bulbs in my high beams over the last 3 years. I mean, think about it, you put headlights in the oven and they're fine. Bulbs generate good heat, but I doubt it's in excess of 300 degrees, especially with the car moving and air outside the housing cooling it.
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    Re: higher watt bulbs in factory foglights?

    I used 100w bulbs in everything from the stock foglights to the PIAA driving lights I have now for a few years (all running the right wiring harness btw). Never had a melting problem.
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    Re: higher watt bulbs in factory foglights?

    Are the stock fogs on the BE glass or plastic?
    My cars:
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    t3h ch33se Wiscon_Mark's Avatar
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    Re: higher watt bulbs in factory foglights?

    I would assume plastic. You don't see many glass headlamps. Should be able to tell by tapping on them.
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    Re: higher watt bulbs in factory foglights?

    Quote Originally Posted by 98legwag
    Are the stock fogs on the BE glass or plastic?
    Judging from pictures, the CAN/US '00-'02 non-Outback BE/BH had plastic foglights. The '03-'04 non-Outback BE/BH had glass. I don't know about the Outback.
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    Re: higher watt bulbs in factory foglights?

    The Outback is glass. We have a 00 Outback and I have a BG Outback fog light in the garage.
    My cars:
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    Re: higher watt bulbs in factory foglights?

    I can now report back that YES 100 watt bulbs in the stock plastic BD/BG/BK fogs will melt/distort the lenses. I took mine off to clean and there is slight distortion in the same spot on both fogs.
    My cars:
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    1998 Legacy L wagon- Sold
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