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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > DIY - LED licence plate lights and door entrance lights



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  DIY - LED licence plate lights and door entrance lights
rikuF10
10-15-2006
Since the ECU is monitoring the current of any exterior light, changing to a LED bulb will trigger the error message.

In order to avoid the error message, you will need to fool the ECU that you are using the correct power consumption.

This is what I used in my LED...
  #22  
By rikuF10 on 10-17-2006, 01:31 AM
Quote:
Originally Posted by joebaggg
hey i set off the ECU when installing led's in the headlights, i believe its the parking light (the peanut bulb) any idea how i can fool the ECU for that?
In thoery, you can fool it with a resister to take the load of the difference in power of the LED and the stock bulbs. Probably a 10W100ohm should do the trick. (it is the small one in one of the photo above)

Inside headlamp housing, it is very crowded. It is quite difficult to safely installed the resistor. I tried some LED at the city light (the peanut bulb). Only when I use those with a 1W hyper LED, I am satisfy with the brightness.....but these 1W LEDs are very hot. A 1W LED + resister is not really feasiable to put inside the headlight housing.
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  #23  
By sesegal99 on 12-19-2006, 12:25 AM
Do you have a spec on the Led plates used for the door and where I can get them? Is it just plug and play? I like the six seperate pattern better. Nice write up.
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  #24  
By Asiann on 12-19-2006, 01:10 AM
Very nice DIY!
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  #25  
By sesegal99 on 12-21-2006, 10:50 AM
Quote:
Do you have a spec on the Led plates used for the door and where I can get them? Is it just plug and play? I like the six seperate pattern better. Nice write up.

BMP
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  #26  
By rikuF10 on 12-22-2006, 10:22 PM
Quote:
Originally Posted by sesegal99
Do you have a spec on the Led plates used for the door and where I can get them? Is it just plug and play? I like the six seperate pattern better. Nice write up.

Hi,

For the door entrance, I bought them off the shelf here in Hong Kong. The brand is called Luxer 1 and it is made in Japan.

http://www.brm21.com/multi.html
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  #27  
By 2323 on 12-23-2006, 01:12 AM
Riku, I saw you put the resistor in place by using vinyl strap. Are you sure the vinyl don't get melted? I use similar setup for my custom angel eyes & the resistor gets really hot & I have to use nuts & bolts to attached them to metal frame...

For the LED trunk lights, I use different method.. No resistor needed to get rid of warning sign.. I just thought the extreme heat of the resistor is just too risky to put them into the trunk cavity.. Too many soft parts that can get burned in there...


Here is what I did for the setup:
Copied from other thread: http://www.e90post.com/forums/showth...821#post576821

OK.. here's the pic...
pic #1, from afar
pic#2, connection on the trunk light.
pic#3, connection on the left parking light.
pic#4, connection on the right parking light.
pic#5, the diagram on how it's connected.

NOTE: do it at your own risk. I've been using this method to get rid of warning sign for 2 months now. So far no problem. But who knows. The wire color on the diagram is based on my car 2005 E90 320i. Other model might differ.

Drawback: If you connected to both side of parking light like I did, when one bulb fails (L or R), there will be no warning sign unless both bulbs fail (L&R). & as you already knew, no warning sign for failing LED bulbs.
Attached Images
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  #28  
By calvino on 12-23-2006, 01:56 AM
2323 that looks easy I'm going to try it
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  #29  
By rikuF10 on 12-23-2006, 04:35 AM
hi...that's a good idea.

Actually, the resistor didn't get hot in my case. It is just a bit warm to touch after a few hour of
driving. As the HK BMW dealer is very strict on modifying, I need to do the modifying that can be reversible and will not leave a trace.
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  #30  
By CJPatel on 12-27-2006, 01:37 PM
Can some one take their door cap off and show me a pic? I am interested in doing the under-the-door lock cap LEDs. I want to see if the door lock caps are same... PM's welcome, thanks guys, PS I have a 2003.5 M3
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  #31  
By Ryan 330i on 12-30-2006, 08:42 PM
who wants to come to my place and do this for me... i am feeling lazy $$$ but i want it. ill $$$ you.
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  #32  
By BayernMuenchen on 01-01-2007, 09:01 PM
how do the light fixtures on the bottom of the door come off?
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  #33  
By Chesmu on 01-01-2007, 09:07 PM
the tip about the blacklines is worth reading the whole thread.
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  #34  
By sesegal99 on 02-01-2007, 11:20 PM
where can we buy those resistors??? I want to do the plate mod but cant find resistors you spec with the heat sinks. Thanks.
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  #35  
By ctgazer on 02-01-2007, 11:36 PM
Quote:
Originally Posted by BayernMuenchen View Post
how do the light fixtures on the bottom of the door come off?
they come off the same as the license lights? you push them to one side and you can slide the entire assembly out...

where did you get the license leds? they are super bright....ive done this but my led's are as bright as yours...
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  #36  
By rikuF10 on 02-01-2007, 11:41 PM
Quote:
Originally Posted by sesegal99 View Post
where can we buy those resistors??? I want to do the plate mod but cant find resistors you spec with the heat sinks. Thanks.
the resister is called a "Resistor, metal cased, power" or sometimes called a "Resistor, wirewound, aluminium housed"


I bought mine here:

http://www.rshongkong.com/cgi-bin/bv...cacheID=hk01ie
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  #37  
By rikuF10 on 02-01-2007, 11:43 PM
These are the LED that I got for the licence plate lights and door entrance light now...

http://www.brm21.com/english/replacement.html

http://www.e90post.com/forums/showth...&highlight=LED
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  #38  
By ctgazer on 02-02-2007, 12:07 AM
Quote:
Originally Posted by RikuE90 View Post
These are the LED that I got for the licence plate lights and door entrance light now...

http://www.e90post.com/forums/showth...&highlight=LED
so to be 100% certain, i need (2) sets of the the 6 LED tail light sets?
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  #39  
By rikuF10 on 02-02-2007, 01:50 AM
Quote:
Originally Posted by ctgazer View Post
so to be 100% certain, i need (2) sets of the the 6 LED tail light sets?
yes:rocks: there is only one 6-LED plate for each package.
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  #40  
By sesegal99 on 02-02-2007, 09:05 AM
so i did a search there....many of that type resistor came up. Do you know what specific one is needed? I saw a 25w one but not sure about the ohm. does that matter?
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  #41  
By sesegal99 on 02-02-2007, 09:08 AM
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  #42  
By rikuF10 on 02-02-2007, 01:09 PM
Quote:
Originally Posted by sesegal99 View Post
so i did a search there....many of that type resistor came up. Do you know what specific one is needed? I saw a 25w one but not sure about the ohm. does that matter?
the resistance value matters. It is all about Ohm's law.
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  #43  
By rikuF10 on 02-02-2007, 01:12 PM
Quote:
Originally Posted by sesegal99 View Post
Yes, this is the one....they come in many different resistance value.
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