2010 Mazda3 hatch fog lamps - Mazda3 Forums : The #1 Mazda 3 Forum
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post #1 of 16 (permalink) Old 04-15-2010, 11:39 AM Thread Starter
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2010 Mazda3 hatch fog lamps

I replaced the standard white halogen bulbs with JDM Yellow bulbs yesterday and I was curious about the metal shroud around the bulb in the housing or the fog lamps. What is the purpose of the metal shroud? It looks like a tube that the bulb slides into when mounted, which to me looks like it blocks a lot of the light being emitted by the bulb.
I was curious if anyone knows what the purpose of this metal shroud is, and what would happen if I removed it. It looks like it is held onto the inside of the housing with a screw. If I can figure out how to remove and disassemble the light fixture, it seems pretty easy to remove. I wonder if it will cause any problems or if anyone has considered this?

Let me hear some feedback before I tear into it please.

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post #2 of 16 (permalink) Old 04-15-2010, 02:39 PM
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Re: 2010 Mazda3 hatch fog lamps

I think its to prevent to much of the light from scattering to the sides due to the shape of the housing. i noticed the same thing when i did my HID conversion.

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post #3 of 16 (permalink) Old 04-17-2010, 02:28 PM Thread Starter
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Re: 2010 Mazda3 hatch fog lamps

I was hoping to get some feedback as to what would happen if i removed it. Has anyone tried this?

I may have to take a look and see how easy it is to take out the housing and try to dismantle the fixture.

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post #4 of 16 (permalink) Old 04-17-2010, 03:15 PM
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Re: 2010 Mazda3 hatch fog lamps

Im on this one.
It's used to direct reflection. The above poster was correct in it's used to prevent the fogs from reflecting none directed light. You can remove the piece with out opening the fog housing. "If" your fingers are small enough to put into the bulb accepting opening you can use your finger to bend the metal up and down. take your time be patient and wiggle it up and down untill the metal weakens enough till it snaps and use a very small pair of long needle nose pliers to grab it and pull it out. I watched my friend do it to his. I passed just because well I know how dealerships work and as much as people on these boards like to boast about modding and the warranties and dealers saying it's o.k. as long as it doesn't cause failure. B.S. these dealers are hurting and they will look for every reason to save on warranty repairs and having to dish out labor cost to repair them. So tread at your own risk.
On the other hand his are 80% brighter than mine now it looks good.

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post #5 of 16 (permalink) Old 04-17-2010, 05:16 PM Thread Starter
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Re: 2010 Mazda3 hatch fog lamps

Thanks for the input! I surmised that it was intended to only allow light to travel back into the reflector and then be directed forward. The top of the bulbs have a yellow paint that pretty much keeps any light from going forward anyway. I noticed the older 3's have a metal cap on the bulb. It seems like a lot of wasted(blocked) radiated light is being shielded and would obviously cut down on the amount or emitted light. The 55Watt bulb is probably only making use of 20-30% of the emitted light. I can see that if it were removed, it might cause a some of the light to be directed out the side because of the way the lens is positioned. But to block most of the bulb doesn't make much sense to me either.

I don't think my fingers will fit in there to bend and break off the metal. I am also afraid I would wind up cracking the housing if I tried to do it that way. I would still like to know if anyone has successfully disassembled the lens housing to find out how they did it.

I am not sure why the dealer would want to claim that removing the shield would cause a problem. Removing it would not cause the power or wattage of the bulb to change. The bulb will still draw the same current so there is no chance that the wiring would get hot and become faulty as a result of removing the shield.

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post #6 of 16 (permalink) Old 04-17-2010, 09:13 PM
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Re: 2010 Mazda3 hatch fog lamps

[quote author=kc2dgq link=topic=170828.msg3618212#msg3618212 date=1271345983]
I replaced the standard white halogen bulbs with JDM Yellow bulbs yesterday and I was curious about the metal shroud around the bulb in the housing or the fog lamps. What is the purpose of the metal shroud? It looks like a tube that the bulb slides into when mounted, which to me looks like it blocks a lot of the light being emitted by the bulb.
I was curious if anyone knows what the purpose of this metal shroud is, and what would happen if I removed it. It looks like it is held onto the inside of the housing with a screw. If I can figure out how to remove and disassemble the light fixture, it seems pretty easy to remove. I wonder if it will cause any problems or if anyone has considered this?

Let me hear some feedback before I tear into it please.
[/quote]

most non projector type headlights on new cars do this too. It's to allow the headlight housing to do it's job.... focus the beam to where it needs to go.
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post #7 of 16 (permalink) Old 06-12-2010, 03:13 AM
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Re: 2010 Mazda3 hatch fog lamps

Sad thing is you can barely tell that the fogs are even on with these cars! With my old P5 the fogs actually helped illuminate the road.
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post #8 of 16 (permalink) Old 06-12-2010, 07:58 AM Thread Starter
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Re: 2010 Mazda3 hatch fog lamps

I agree...the fogs don't seem to do much. I was told that the fogs can be adjusted up and down. I have decided that rather than mess with the shielding inside the fixture, I will adjust the beam upward a bit so that it isn't just illuminating the ground directly under the front end or the vehicle(which you can't even see while sitting behind the wheel).

The word is that there is a screw under the housing that you can loosen, then the housing can be pivoted up or down. I am not looking to blind anyone , but having the fogs directed ahead of the car would be better than they are now. I will try it one of these days and report back....possibly post before and after photos to show what difference it makes if any. If anyone else has tried this, let me know how it worked out for you.

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post #9 of 16 (permalink) Old 06-13-2010, 09:33 PM
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Re: 2010 Mazda3 hatch fog lamps

I had repositioned my fog lights a few months ago and it does make a bit of difference in forward projection, can't tell the full extent really without having an Indy fog mod which has not been revealed yet. However, does not help with side road illumination.
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post #10 of 16 (permalink) Old 07-15-2010, 10:24 PM
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Re: 2010 Mazda3 hatch fog lamps

[quote author=P0TaT03s link=topic=170828.msg3695391#msg3695391 date=1276479234]
I had repositioned my fog lights a few months ago and it does make a bit of difference in forward projection, can't tell the full extent really without having an Indy fog mod which has not been revealed yet. However, does not help with side road illumination.
[/quote]

Did you have to remove the bumper to repostition the fogs? I read somewhere that you had to, but I'd like to do it without a bumper removal.
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