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T10 bulbs?

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Old Dec 27, 2014 | 04:25 PM
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Default T10 bulbs?

I was replacing all my headlamp bulbs today and I noticed there are two sets of bulbs in the DRL area for my 04 LS430. We replaced the xenons, and then we went to replace the 9005 bulbs, but there are two MORE bulbs directly above the 9005's. Are these T10 bulbs? We couldn't get them to come on no matter what we tried. What are they for? Here is a pic
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Old Dec 27, 2014 | 04:35 PM
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It's called Clearance Lamp. It should come on when you turn on the low beam (9005 is off). Of course when the low beam is off, the 9005 is on at half power to provide DRL functionality.

I installed a set of PIAA bulbs I purchased on Amazon.com
Amazon.com: PIAA 19173 168 Plasma Ion Yellow Wedge Bulb - 2 Piece: Automotive Amazon.com: PIAA 19173 168 Plasma Ion Yellow Wedge Bulb - 2 Piece: Automotive

Last edited by rkw77080; Dec 27, 2014 at 04:45 PM.
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Old Dec 27, 2014 | 04:44 PM
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ok. I don't think they are working. Nothing there came on when we turned on the low beams. What is the part #?
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Old Dec 27, 2014 | 04:48 PM
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Just from the appearance, it looks burned out.
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Old Dec 27, 2014 | 04:53 PM
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Ok I think I found it on Sewell Lexus. Is this right? I want to get it on Amazon though. Does someone know the generic name for it?


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Old Dec 27, 2014 | 04:55 PM
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Originally Posted by aypues
ok. I don't think they are working. Nothing there came on when we turned on the low beams. What is the part #?
These are 168 wedge or T-10 (10mm) base bulbs.
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Old Dec 27, 2014 | 04:57 PM
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Originally Posted by aypues
Ok I think I found it on Sewell Lexus. Is this right? I want to get it on Amazon though. Does someone know the generic name for it?
Take a look at Post #2. Those PIAA bulbs look pretty good.
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Old Dec 27, 2014 | 05:02 PM
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Originally Posted by rkw77080
Take a look at Post #2. Those PIAA bulbs look pretty good.
ok thanks. Do they need to be yellow like that? They looked clear for the OEM ones.
What are these bulbs supposed to be doing in terms of functionality if the low beams are already turned on?
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Old Dec 27, 2014 | 05:27 PM
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They mainly illuminate the housing. Decorative.
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Old Dec 27, 2014 | 05:28 PM
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Originally Posted by Lavrishevo
They mainly illuminate the housing. Decorative.
oh. I definitely need it then. Our headlight assemblies look amazing.
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Old Dec 27, 2014 | 05:29 PM
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OEM is #2825 5-watt clear. Sylvania makes 'em. Clear or yellow is personal choice.
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Old Dec 27, 2014 | 05:31 PM
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I like the PIAA yellow, which mimics the DRL (9005 half power) color nicely.

Here's a mini-DIY on how to get to these bulbs...

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Old Dec 27, 2014 | 05:35 PM
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Nicely done as always. RKW can whip out a DIY very quickly.

Last edited by Lavrishevo; Dec 28, 2014 at 12:17 PM.
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Old Dec 27, 2014 | 06:18 PM
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Here's a quick comparison between the PIAA and DRL... But like Tom57 said, Clear or yellow is personal choice.


Last edited by rkw77080; Dec 27, 2014 at 06:27 PM.
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Old Dec 27, 2014 | 08:00 PM
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rkw's DIY's with custom pictures are really quite good. And, he has PDFs of pages for specific DIY fixes straight from the Lexus shop manual. rkw is a valuable resource to CL.
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