GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

What LED bulb should I use for Sonar LED tailights?

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Old 04-16-07, 04:29 AM
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sleeper408
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Default What LED bulb should I use for Sonar LED tailights?

Hey guys, I finally realized how pathetic the light output of the chrome amber turn signal bulbs that come with the Sonar tails actually is in the daytime. I was almost rear-ended the other day because the other driver couldn't see my chrome amber bulb "blinking." I know there are members who have changed that crappy bulb to an amber LED bulb.

My questions are:

1) Should I get the regular kind or "refractor" type?
2) Since these are aftermarket tails, is the bulb # still 7440 or a different one?

JeffTsai mentioned that he actually might have used 1156 bulbs for the rear turn signals on his Sonar tails. Can anyone clarify?
Old 04-16-07, 05:18 AM
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Hey don't use the LED stuff. It's simply not bright enough. If you think the chrome bulb is dim, you will laugh at a LED's output. Just use the silverstars I told you about.

The only LED that can come close to a normal bulb would be a Luxeon Star. They are very expensive LED's and are not used in any of the pre-built LED products you can buy. Just to clarify, A 3w Luxeon Star is as bright as about 40-50 standard LED's. You need at least 3 Luxeon stars and a complex system to diffuse the light correctly to match the output of a single silverstar bulb. Trust me I've tried many combos. Just stick with a normal bulb To use LED's as a blinker requires a complex design and more powerful LED's. This is why even most new cars with OEM LED tail lights still use standard bulbs for blinkers.

Last edited by JeffTsai; 04-16-07 at 05:21 AM.
Old 04-16-07, 11:42 AM
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chrispy
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Anyone want to sell me their chrome bulbs? I'm using a clear white bulb and it doesn't blink amber. I don't want to get pulled over.
Old 04-16-07, 12:17 PM
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Originally Posted by JeffTsai
Hey don't use the LED stuff. It's simply not bright enough. If you think the chrome bulb is dim, you will laugh at a LED's output. Just use the silverstars I told you about.

The only LED that can come close to a normal bulb would be a Luxeon Star. They are very expensive LED's and are not used in any of the pre-built LED products you can buy. Just to clarify, A 3w Luxeon Star is as bright as about 40-50 standard LED's. You need at least 3 Luxeon stars and a complex system to diffuse the light correctly to match the output of a single silverstar bulb. Trust me I've tried many combos. Just stick with a normal bulb To use LED's as a blinker requires a complex design and more powerful LED's. This is why even most new cars with OEM LED tail lights still use standard bulbs for blinkers.
JeffTsai, which silverstar bulbs would these be? I too thought that the chrome bulbs weren't bright enough either and I just couldn't find a set of brighter bulbs. I will have to these ones a shot since you've had experience with them. TIA! ! !
Old 04-16-07, 01:12 PM
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Originally Posted by JeffTsai
Hey don't use the LED stuff. It's simply not bright enough. If you think the chrome bulb is dim, you will laugh at a LED's output. Just use the silverstars I told you about.

The only LED that can come close to a normal bulb would be a Luxeon Star. They are very expensive LED's and are not used in any of the pre-built LED products you can buy. Just to clarify, A 3w Luxeon Star is as bright as about 40-50 standard LED's. You need at least 3 Luxeon stars and a complex system to diffuse the light correctly to match the output of a single silverstar bulb. Trust me I've tried many combos. Just stick with a normal bulb To use LED's as a blinker requires a complex design and more powerful LED's. This is why even most new cars with OEM LED tail lights still use standard bulbs for blinkers.
Thanks for the great explanation Jeff. I will go ahead and get the Silverstar bulbs.
Old 04-16-07, 01:44 PM
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i have this problem.. i got some LED bulb thing.. works decently at night, but during the day - the output isn't there lol especially wit the sun shining on it
Old 04-17-07, 10:15 PM
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Can anyone confirm whether it is 1156 or the stock 7440?
Old 04-17-07, 10:24 PM
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The Sonar tails are size 1156. Anyone want to spare their chrome bulbs that they don't want?
Old 04-18-07, 02:32 PM
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Originally Posted by ChrisES
The Sonar tails are size 1156. Anyone want to spare their chrome bulbs that they don't want?

Thanks. You can have my chrome amber bulbs when I change them out which will be sometime next week. My car is in the shop. I'll send you a PM.
Old 04-27-07, 03:03 PM
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I didn't find the Silverstar type in 1156. I only found it in 1157A. Will that work?
Old 04-27-07, 03:07 PM
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Originally Posted by sleeper408
I didn't find the Silverstar type in 1156. I only found it in 1157A. Will that work?
I believe 1157 is dual filament and 1156 is single so they won't work. I could be wrong, can someone confirm?
Old 04-27-07, 06:21 PM
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i used a mirror/chrome pia i will put a part number shortly it was 40$ i think really nice and bright, i even got a white led for reverse..looks hot
Old 04-28-07, 04:44 AM
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Originally Posted by ChrisES
I believe 1157 is dual filament and 1156 is single so they won't work. I could be wrong, can someone confirm?
That's what I thought. I know the bulbs are the same size but wanted to make sure. Hmmmm..... I'll have to check PepBoys for the Silverstar 1156 then.
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