Have you used these "T5" type wedged or festoon/dome type bulbs as interior or parklights in your car?
Any idea, which of the 1´000´000 choices at eBay could be the good ones?
Just looking and there´s so many of them.
I once had a couple as parklights, they lasted almost a week so I´m not buying them blind this time :|
I started replacing the 42mm and 44mm festoon-type dome light bulbs in my car with LEDs years ago (most of them from DX) and it's sort of an ongoing process because they have a tendency to break. Since they're cheap and easily replaceable, I don't care too much about reliability. Most of the blue ones aren't too bright (my car has a blue speedometer and radio backlight with red ambient lights) so I ditched blue and went back to white. The ones I'm using right now are these T10s which aren't all that bright but work well in tight spaces, these 42mm LEDs in my dome lights (brighter than most SMDs I've tried; I can't speak to their reliability yet, because I've only had them for two months) and these T10s where size isn't a concern (see here for measurements; not mine).
There is a good chance that most LEDs will have a faint glow even when off, depending on your car and how it's set up (when you turn the key, most systems in a car that uses a CAN bus aren't truly "off" until the central electrics control module shuts them down). In most modern cars, you'll need to use LEDs with a small resistor if you want them truly off until you need them. If the faint white glow doesn't bother you, you don't really need to worry about it since the LED's power consumption is negligible. Personally, I rather like it.
Make your own lol.
http://www.hidplanet.com/forums/showthread.php?25645-Simple-LED-Festoon-bulb-project
Oxy Moron, thanks for the links, I try to search similar from eBay.
Don´t want too bright ones in car and preferably warmish tinted, not blue.
I don´t have CAN bus at my car but theres a small condensator which turns off the OEM interior light kinda slowly.
shhh: Not bothering to build my own :D too bright ones anyway ;)
DX SKU.13435 (up) has lasted many years already, but changed to DX SKU.73309 (down) because of "better" color.
DX SKU.17904 were crap and resistors burned in a week 
Then I got something similar to these from eBay, not currently in use (too lazy to change after vehicle inspection)
Third braking light is DX SKU.10527, isn't too bright thru tinted window :(
Oh, and almost forgot... I have this as dashboard light... too bright as it is and I'm currently waiting for dimmer.
:D
A few of mine.
Nice interior! :D
M3TAL_L0RD: Could this be the same as in DX? : http://cgi.ebay.com/ebaymotors/12-LED-SMD-Warm-White-Interior-Room-Dome-Door-Car-Light-/280728834752?pt=Motors_Car_Truck_Parts_Accessories&hash=item415cbe12c0#ht_5188wt_906
This is also available in white (with same product images) but in description this says "warm".
Strangely no shipping available to Finland but better send a PM since about all the rest of the world seems to be covered...
Thanks :)
Doesn't look same but should be similar. Description and pics are quite something...
LED component form: 12 5050SMD bright LED combination. Touch base with variety of optional specifications.
Light Color: White
Number of SMD:12 (1210 Chip)
Pure white SMD LED's
And in pictures show clearly cool white LEDs and light.
I hear you... every place should ship to Finland ;)
Got answer: Pity that we don't ship to your country due to some strict policy.
Very informative, as always.
edit: ordered this instead : http://cgi.ebay.com/ebaymotors/Warm-White-Car-Interior-20-SMD-5050-LED-Light-panel-12V-/280728371570?pt=Motors_Car_Truck_Parts_Accessories&hash=item415cb70172#ht_1920wt_939
I have these in all of my cars, very white cold fluorescent color, brighter than the standard bulb. Had them for a couple of years no failures.
http://www.dealextreme.com/p/31-6w-6x3528-t10-car-festoon-white-light-led-bulb-dc-12v-27807
Just updating:
Ordered some more festoon-type bulbs.
The first one, 20 SMD 5050 warm white panel has been very good.
Well, I think 12 SMD would have been spot on, this is just a tad too bright IMO 
This thread is more than a year old but I wanted to share my experience.
I will only talk about festoon light.
First I bought this
The main advantage that it have the same size as a normal festoon but not really bright and very cool white.
then I come to this
I don’t know what kind of led it is, provided a good amout of light, but still very blueish. It replaced the above for the trunk light for a long time.
For dome light, it take 31mm festoon so the choice was limited. I ended up with this
very bright, but the color was not very good, I think that the CRI was very low.
Then I discovered festoon with Cree XR-E.
The metal ring show it’s a XR-E emiter. The same emiter used on many single AA powered flashlight.
There is 31mm, 36mm, 39mm and 42mm
This is brighter that any festoon led I tested before, very cool white but not blue, with proper CRI so good color rendition, better than SMD used on other festoon.
I didn’t test on car that have OBD check but on one car I used it, the light is dimmed before shut off completely. With that led, it dimmed to but it flicker a little.
The con is that it’s a little more expensive than other led festoon.
I am sorry all my link are on dx.com, I am not affiliated with them. I think that those xr-e festoon can be found on aliexpress or ebay.
