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rhd vs lhd headlights - 6G Celicas Forums

Topic #89981 16 posts Started by CrossCudi
so im thinking of getting these projectors and read that everyone converts them to rhd. i dont know the reason behind this..and if it is manditory or jus for preference. ? a little help here thanks. biggrin.gif



Edit: sorry the conversion is from RHD to LHD.

This post has been edited by CrossCudi: Jun 28, 2013 - 9:53 AM

94' Celica GT Manual
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QUOTE (CrossCudi @ Jun 28, 2013 - 10:51 AM) *
>so im thinking of getting these projectors and read that everyone converts them to rhd. i dont know the reason behind this..and if it is manditory or jus for preference. ? a little help here thanks. biggrin.gif



Edit: sorry the conversion is from RHD to LHD.


Well the way the cut off is on them, it's notched out on the left side so if you were driving down the road it would blind everyone in the opposite lane. Now if you were in a place where they drove on the opposite side of the road, then you wouldn't blind anyone since it would be lighting up the side of the road more. You don't have to do it, but it's more of a respect thing.
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QUOTE (mkernz22 @ Jun 28, 2013 - 10:58 AM) *
>Well the way the cut off is on them, it's notched out on the left side so if you were driving down the road it would blind everyone in the opposite lane. Now if you were in a place where they drove on the opposite side of the road, then you wouldn't blind anyone since it would be lighting up the side of the road more. You don't have to do it, but it's more of a respect thing.


Thank you so much for the clean up,. so if japan were ordering headlights from us, they would be doing the same to our headlights..hmm interesting. i always thought headlights were centered... uurrgh that conversion takes alot of patience..Thanks mkernz22 thumbsup.gif

94' Celica GT Manual
If you park a car in front of a wall, you'll see that one side of your headlights is lower than the other, so you don't blind incoming traffic on the other lane. So i believe that conversion is necessary to ensure safety of everyone on the road. Some countries (or states in your case) even check this on the annual car inspection.

Here is a dutch tutorial on how to do the conversion:
http://celicagt.nl/v1/Tuning/Exterieur/projectors.html

Should't be a problem to understand it using google trahslator. Hope it helps

My '97 ST slow mod thread
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QUOTE (CrossCudi @ Jun 28, 2013 - 11:40 AM) *
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QUOTE (mkernz22 @ Jun 28, 2013 - 10:58 AM) *
>Well the way the cut off is on them, it's notched out on the left side so if you were driving down the road it would blind everyone in the opposite lane. Now if you were in a place where they drove on the opposite side of the road, then you wouldn't blind anyone since it would be lighting up the side of the road more. You don't have to do it, but it's more of a respect thing.


Thank you so much for the clean up,. so if japan were ordering headlights from us, they would be doing the same to our headlights..hmm interesting. i always thought headlights were centered... uurrgh that conversion takes alot of patience..Thanks mkernz22 thumbsup.gif



That wouldn't be the case for them because we never got projectors here in the US, just the regular frosted ones or whatever you call them. The ones that cone stock here are centered, its only the projectors that aren't centered.
If you live in the states then the conversion would be mandatory. There's lazy people like me who just drives it without the conversion. Either way the lights are still illegal to drive on the streets. Lol.

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QUOTE (Nihil @ Jun 28, 2013 - 9:44 AM) *
>If you park a car in front of a wall, you'll see that one side of your headlights is lower than the other, so you don't blind incoming traffic on the other lane. So i believe that conversion is necessary to ensure safety of everyone on the road. Some countries (or states in your case) even check this on the annual car inspection.

Here is a dutch tutorial on how to do the conversion:
http://celicagt.nl/v1/Tuning/Exterieur/projectors.html

Should't be a problem to understand it using google trahslator. Hope it helps


The problem is that shaped beam patterns were not legal in the U.S. until a few years ago. The U.S. preferred to keep headlights acting as if it were still the 1950s, with two hotspots on the road and half the light scattered upwards to illuminate overhead signs.

Europe and the rest of the developed world used the sharp horizontal cutoff to produce an even spread of light on the road -- overhead signs less than 40 years old are almost all self-lit -- with the beam spreading upward towards one end to illuminate roadside signs. Japan and the UK, as well as a few smaller Commonwealth countries, have that kink on the opposite side to pretty much the rest of the world. Canada compromised -- we'd accept both ECE beam patterns and the ancient US DOT (Department of Transportation) beam patterns.

"Employ your time in improving yourself by other men's writings, so that you shall gain easily what others labored hard for." -Socrates. Even Socrates told us touse the search button!2006 Aston Martin V8 Vantage.1998 Celica GT-BEAMSSwapped.2022 4Runner TRD Off Road Prenium.2021 GMC Sierra AT4.
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QUOTE (Galcobar @ Jun 28, 2013 - 12:41 PM) *
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QUOTE (Nihil @ Jun 28, 2013 - 9:44 AM) *
>If you park a car in front of a wall, you'll see that one side of your headlights is lower than the other, so you don't blind incoming traffic on the other lane. So i believe that conversion is necessary to ensure safety of everyone on the road. Some countries (or states in your case) even check this on the annual car inspection.

Here is a dutch tutorial on how to do the conversion:
http://celicagt.nl/v1/Tuning/Exterieur/projectors.html

Should't be a problem to understand it using google trahslator. Hope it helps


The problem is that shaped beam patterns were not legal in the U.S. until a few years ago. The U.S. preferred to keep headlights acting as if it were still the 1950s, with two hotspots on the road and half the light scattered upwards to illuminate overhead signs.

Europe and the rest of the developed world used the sharp horizontal cutoff to produce an even spread of light on the road -- overhead signs less than 40 years old are almost all self-lit -- with the beam spreading upward towards one end to illuminate roadside signs. Japan and the UK, as well as a few smaller Commonwealth countries, have that kink on the opposite side to pretty much the rest of the world. Canada compromised -- we'd accept both ECE beam patterns and the ancient US DOT (Department of Transportation) beam patterns.


THUS, I'd HIGHLY recommend having fog lights installed to illuminate over head reflective signs on freeways and highways.

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Thanks everyone, extremely helpful source of info.
i recently won a bid on ebay for a set, cant wait to mod and install.

thanks againg thumbsup.gif

94' Celica GT Manual
i just put it on and drive it like a boss. dont forget there is a wiring how to that i wrote for the wiring conversion if you choose to.

This post has been edited by trdproven: Jul 5, 2013 - 1:01 AM

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QUOTE (trdproven @ Jul 5, 2013 - 2:00 AM) *
>i just put it on and drive it like a boss. dont forget there is a wiring how to that i wrote for the wiring conversion if you choose to.


that would be sweet.. link plz thumbsup.gif
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So i just got in the mail my projectors biggrin.gif biggrin.gif biggrin.gif

i currently have HID on my stock lights,
i hope they are the same fitment ?

94' Celica GT Manual
nope. The projector Los are h1 bulbs and the Hi are interchangeable 9005.

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QUOTE (ILoveMySilly97 @ Jul 9, 2013 - 4:14 PM) *
>nope. The projector Los are h1 bulbs and the Hi are interchangeable 9005.



thanx, i relealized this yeasterday as i was exchanging them.

but bad news as a result... kindasad.gif

94' Celica GT Manual
Just buy a h1 hid replacement bulb. That's what I did with mine. Plus that'll save you from making an adapter. Lol.

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