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Discussion Starter · #1 · (Edited)

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Discussion Starter · #5 ·
well if anyone else need the chart for cross referencing the bulbs for leds here it is

BULB CROSS REFERENCE
TYPE REPLACES
1157 ----------1154 2057 2357 2397 3497 1016 1034 7528
1156 -------------1073 1093 1129 1141 1159 1259 1459 1619 1651 1680 3496 5007 5008 7506 7527

67-------------- 61 63 69 71 81 98 98 303 623 1003 1155 1247 1251 3497 5007 5008 3157 3057
3157 -----------------3457 4157 (not 3157-SRCK)
3156 ---------------3056 3156 3356 3456
74 ---------------17 18 37 70 73 79 85 86 2721
3022 -----------3021 3175 6411 6423 6428 6430 6461
4410 ---------211 212-2 214-2 6413 6429
WLED-------------series 147 152 158 159 161 168 184 192 193 259 280 285 447 464 555 558 585 655 656 657 1250 1251 1252 2450 2652 2921 2825
921/ T13 ------------------ 901 904 906 908 909 912 914 915 916 917 918 920 922 923 926 927 928 939
 

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Discussion Starter · #6 ·
anyone know what bulbs are used in the atc now trying to get a list before i buy them wanna change them all to match
also what size are the ones in the otis as i believe they sell the bulbs for that to the tiny ones
 

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Code2medic said:
anyone know what bulbs are used in the atc now trying to get a list before i buy them wanna change them all to match
also what size are the ones in the otis as i believe they sell the bulbs for that to the tiny ones
For the OTIS, the reading lamps are 192 and the information area is something called 4437661. For the A/C heater control, the bulbs are 330. I'm not sure if that includes ATC, but I do know it includes MTC (I had mine apart one day and the bulbs were labeled 330).
 

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Dude, don'y buy the 330s!!! when I got my ATC head a few of the bulbs were burnt out. I figured I'd just replace them with the ones from my MTC but they were too big. The ATC are special tiny little bulbs and believe me, I spent hours looking but they don't make LED bulbs that small. You can only get them from the dealer.
 

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Discussion Starter · #11 · (Edited)
00rt

you might wanna check here http://autolumination.com/74.htm considering i was informed that the #74 replace 330 im thinking i might buy one and try it

Now these are cool brakes lights they have flashes 20 times in secs and then is the regular brake lights scroll till you see pcar then refresh the browers and watch the brakes
http://autolumination.com/dcell5.html

also for anyone wanting to do the back reflector led u might be able to use the 12 volt strip in the middle of the page
http://autolumination.com/tubes.htm
 

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Code2medic said:
00rt

you might wanna check here http://autolumination.com/74.htm considering i was informed that the #74 replace 330 im thinking i might buy one and try it
No, I know that. My point is, the ATC doesn't use a 330. The 330 is the bulb size for MTC and it is way too big for the ATC. The ATC is a very tiny bulb that is a dealer only part. I did alot of research on it and it seems a few manufacturers, especially lexus, use bulbs of this size too, only with a slightly different base. Many of the lexus owners are pissed that no aftermarket companies make led bulbs to fit that application because apparently some of the lexus suvs have bulbs in the cluster for the gear indicator and they burn out every year or so and then it costs $300 at the dealer to have them replaced!! They wanted to go led so they could have the mreplaced once and then not worry about it. They have talked to many companies and I contacted a few as well, and the smallest bulb any of them have is the 330 or now, the #74.
 

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Code2medic said:
00rt

you might wanna check here http://autolumination.com/74.htm considering i was informed that the #74 replace 330 im thinking i might buy one and try it
Where did you hear that 74 replaces 330? I would love to replace the bulbs in my MTC with some brighter white LEDs.
 

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Discussion Starter · #15 · (Edited)
According to there web site

Focused led lenses emit light out the nose of the bulb, like a flashlight beam.

Ba7s Single Contact Midget Flange ( Porsche Instrument Panels)

Replaces: 327 328 330 338 345 367 376 381 382 387

Tho as one said the 330 are to big for the atc so my search continues im gonna have to take my atc out to use one to compare
 

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Code2medic said:
According to there web site

Focused led lenses emit light out the nose of the bulb, like a flashlight beam.

Ba7s Single Contact Midget Flange ( Porsche Instrument Panels)

Replaces: 327 328 330 338 345 367 376 381 382 387

Tho as one said the 330 are to big for the atc so my search continues im gonna have to take my atc out to use one to compare

Ah....see, I was looking at the top of that page that reads "#74 bulbs replace the following bulbs:17 18 37 70 73 79 85 86 2721".
 

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Be careful if you're thinking about getting those focused LEDs. In the MTC, the light from the bulb spreads throughout the housing to light everything. With a focused beam, you'll most likely have a few parts of the controls(directly in front of the bulbs) that are very bright, and the rest will hardly be lit.
 

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Code2medic said:
00r/t

What you think im thinking those smaller bulbs might actually be replaceable with these on this page even come with the contacts what you think

http://autolumination.com/74.htm
17022 Neo - Wedge Instrument Panel Bulbs are 12mm (3/8") diameter x 21mm (13/16") high

17022
Well, I tried to put the MTC bulb in my ATC and not only was the bulb itself bigger, but the base was bigger too. If that 74 bulb right there has the same base as the 330 in the MTC, which I'm sure it does, it won't fit. I took a bunch of measurements and couldn't find any that worked. I'm going to do my own setup so I can put LEDs in there, I just don't have the cash to spend on a spare ATC head to mess around on. Maybe I can find a good deal on a broken one because all I really need is the back circuit board with the bulb holes and a couple of bases from the bulbs.
 
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