HID Bulb Question

mfinlay04 · 08-16-2007, 09:56 AM

I've seen it both ways on different website.

When the bulb is installed should the return filament on the outside of the bulb be on top or bottom.

I currently have it on the bottom but I'm starting to think they should have been on the top

Anyone?!?!?!

NIGHTHAWKSI · 08-16-2007, 10:05 AM

well it can only be installed one way...and once it is rotated fully into place the filament should be on the bottom

***Mikey6p*** · 08-16-2007, 10:26 AM

bottom.

mfinlay04 · 08-16-2007, 10:34 AM

http://www.gthid.ca/install_guide.pdf

Page 3...

Shows the bulb on top

NIGHTHAWKSI · 08-16-2007, 10:38 AM

yea...thas just a cheesy installation manual...but actually when you go to put the bulb in, it only fits one way or else the tabs on the side of the base wont fit correctly. and if you put it in right, it will be on the bottom.

achapman · 08-16-2007, 10:42 AM

Maybe it depends on the aftermarket bulb? All D2s go on the bottom. At least that I have seen. There is always the notch in the projector for it to go on the bottom.

***Mikey6p*** · 08-16-2007, 10:44 AM

What he said. The bulb wont go in any other way.

mfinlay04 · 08-16-2007, 11:03 AM

What do you mean a notch at the bottom? My bulbs are straight at the connectors. It appears they could go in any position. But if the wire was on the top you'd probably see a shadow on the bottom of the project light. Since it flips when it hits the reflector...

achapman · 08-16-2007, 11:06 AM

On OEM projectors, there is a notch at the bottom where you insert the bulb on the projector.

You are putting them into the stock reflectors? I'd still say bottom but switch it and see what the effect is.

NIGHTHAWKSI · 08-16-2007, 11:25 AM

lol...for the last time...you cannot flip it. the bulb only fits in one way. the plastic tabs at eh base only allow it to fit in one way...you CANNOT put it in upside down...if somehow you do manage to get it in tehre...it will not seat correctly in the bulb socket.

the filiment will be on the bottom if it is installed correctly.
/end thread

achapman · 08-16-2007, 11:41 AM

On some aftermarket bulbs that I have owned, you can put them in upside down. I had a H7 kit for my bike that you could put it in either way. And yes they would seat correctly.

mfinlay04 · 08-17-2007, 01:27 AM

Quote:

Originally Posted by achapman

On some aftermarket bulbs that I have owned, you can put them in upside down. I had a H7 kit for my bike that you could put it in either way. And yes they would seat correctly.

Yeah, when installing mine it seemed as if they could be installed either way. I have to take them out anyways to clean them with alcohol since I accidentally touched the one bulb with my bare finger.

08-16-2007, 09:56 AM	#1 (permalink)
mfinlay04 Senior Member Join Date: Sep 2006 Location: Ontario Posts: 1,971 Matt Finlay iTrader: 3 / 100%	HID Bulb Question I've seen it both ways on different website. When the bulb is installed should the return filament on the outside of the bulb be on top or bottom. I currently have it on the bottom but I'm starting to think they should have been on the top Anyone?!?!?!

08-16-2007, 10:26 AM	#3 (permalink)
*Mikey6p* M U K E Y Join Date: May 2006 Location: Santa Ana, CA Age: 21 Posts: 10,533 Mukey iTrader: 10 / 100%	bottom. __________________

08-16-2007, 10:44 AM	#7 (permalink)
*Mikey6p* M U K E Y Join Date: May 2006 Location: Santa Ana, CA Age: 21 Posts: 10,533 Mukey iTrader: 10 / 100%	What he said. The bulb wont go in any other way. __________________

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08-16-2007, 10:05 AM	#2 (permalink)
NIGHTHAWKSI Senior Member Join Date: Nov 2006 Location: long island Age: 22 Posts: 11,775 Ian iTrader: 12 / 100%	well it can only be installed one way...and once it is rotated fully into place the filament should be on the bottom

08-16-2007, 10:34 AM	#4 (permalink)
mfinlay04 Senior Member Join Date: Sep 2006 Location: Ontario Posts: 1,971 Matt Finlay iTrader: 3 / 100%	http://www.gthid.ca/install_guide.pdf Page 3... Shows the bulb on top

08-16-2007, 10:38 AM	#5 (permalink)
NIGHTHAWKSI Senior Member Join Date: Nov 2006 Location: long island Age: 22 Posts: 11,775 Ian iTrader: 12 / 100%	yea...thas just a cheesy installation manual...but actually when you go to put the bulb in, it only fits one way or else the tabs on the side of the base wont fit correctly. and if you put it in right, it will be on the bottom.

08-16-2007, 10:42 AM	#6 (permalink)
achapman Senior Member Join Date: Aug 2007 Location: Chicago, IL Age: 24 Posts: 304 iTrader: 0 / 0%	Maybe it depends on the aftermarket bulb? All D2s go on the bottom. At least that I have seen. There is always the notch in the projector for it to go on the bottom.

08-16-2007, 11:03 AM	#8 (permalink)
mfinlay04 Senior Member Join Date: Sep 2006 Location: Ontario Posts: 1,971 Matt Finlay iTrader: 3 / 100%	What do you mean a notch at the bottom? My bulbs are straight at the connectors. It appears they could go in any position. But if the wire was on the top you'd probably see a shadow on the bottom of the project light. Since it flips when it hits the reflector...

08-16-2007, 11:06 AM	#9 (permalink)
achapman Senior Member Join Date: Aug 2007 Location: Chicago, IL Age: 24 Posts: 304 iTrader: 0 / 0%	On OEM projectors, there is a notch at the bottom where you insert the bulb on the projector. You are putting them into the stock reflectors? I'd still say bottom but switch it and see what the effect is.

08-16-2007, 11:25 AM	#10 (permalink)
NIGHTHAWKSI Senior Member Join Date: Nov 2006 Location: long island Age: 22 Posts: 11,775 Ian iTrader: 12 / 100%	lol...for the last time...you cannot flip it. the bulb only fits in one way. the plastic tabs at eh base only allow it to fit in one way...you CANNOT put it in upside down...if somehow you do manage to get it in tehre...it will not seat correctly in the bulb socket. the filiment will be on the bottom if it is installed correctly. /end thread

08-16-2007, 11:41 AM	#11 (permalink)
achapman Senior Member Join Date: Aug 2007 Location: Chicago, IL Age: 24 Posts: 304 iTrader: 0 / 0%	On some aftermarket bulbs that I have owned, you can put them in upside down. I had a H7 kit for my bike that you could put it in either way. And yes they would seat correctly.