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Old 10-05-2010, 09:34 PM   #1
wholenizz
 
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Drives: 07 yaris hatchy
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Post HID bulb size for stock headlights?

I already have a HID kit installed in my projectors. Going back to stock. What size bulbs are they? I know they are H4's but it looks like theres a few types of H4's. Theres like 9005 9007 9006 ect. which one exactly is it?
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Old 10-05-2010, 09:39 PM   #2
pspeezy
 
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Quote:
Originally Posted by wholenizz View Post
I already have a HID kit installed in my projectors. Going back to stock. What size bulbs are they? I know they are H4's but it looks like theres a few types of H4's. Theres like 9005 9007 9006 ect. which one exactly is it?
according to this thread



2007 TOYOTA Yaris (Hatchback)

High & low beam headlamp
9003
9003ST Silverstar High Performance Lighting: The Whiter and Brighter Halogen
9003XV XtraVision Halogen Upgrade: Up to 30% Brighter
9003CB Cool Blue Halogen Upgrade: White Hot; Super Cool; 100% Street Legal



I honestly have no clue what those numbers mean, but thats what I found in that thread, hope that helps you find out what you're looking for!


edit: like i said, i have no clue what those numbers mean, so don't take my word for it.
you might want to wait for someone who knows what they are talking about to help you out
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Old 10-06-2010, 01:25 PM   #3
RedRide
 
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Allow me to clarify this a bit.....

H-4 and 9003 are actually the same bulb in the sense that they are physically interchangeable.

Originally, there was just the H-4 which was used mainly in European cars.

However, when US manufacturers wanted to use the H-4 bulb, it did not meet US standards because the manufacturing specs of the light beam aming portion of the bulb was not tight enough.

So, a new, tighter manufacturing spec was created and the bulb was named "9003"

However a qualty H-4 bulb such as PIAA have their own tighter specs and its beam aiming is just as good as a 9003.

So, the Yaris will accept either a 9003 or a quality H-4 bulb.
I would just stay away from "bargin" H-4 bulbs as you don't know what you are getting.

Personally, I'm currently using "PIAA Xtreme White Plus" H-4 and the aiming is spot on.

Last edited by RedRide; 10-06-2010 at 01:38 PM.
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