someguys were try to do it by getting the euro LCM with the rear fogs button, i just dont know if they ever got it to work.

they were talking about it on this thread, i dunno if helps but its worht looking at.
http://forum.e46fanatics.com/showthread.php?t=132892&page=3&pp=20

 

someguys were try to do it by getting the euro LCM with the rear fogs button, i just dont know if they ever got it to work.

they were talking about it on this thread, i dunno if helps but its worht looking at.
http://forum.e46fanatics.com/showthread.php?t=132892&page=3&pp=20

Miamitopaz.... I wanted to get my halo working without the fogs.
From what I've read, the rear fog lights only work when the front ones are on. The same could be done by using the fog as trigger and sticking a switch in between the fog light and the relay. This is probably more for cosmetics.

But thanks for the advice.

 

Is it not possible to connect via a relay to one of the front corner lights?


Mark

 

I got one wiring diagram from someone on a post I put up a while ago but haven't had a chance to try it out. If you can find the wiring for the rear running lights that will have the same effect. I also have been told the the wires to the fog switch would work but will come off with the highs. i am more inclined to find out where the wiring to the rear tailights are under the dash, and wire it to them. Other wise I was going to try to make a small extension with 2 connectors and a short piece of ribbom cable to be able to splice into the LCM and not cut existing wiring. Keep me posted, hopefully we can get this figured out. Here is the diagram I was sent, doesn't really make sense to me but I haven't looked at it in months. Seems NO ONE else wants to do this, or says it can be done and wont't tell you a way besides running a wire from the tailight up to the front
<br>
<IMG SRC="http://pws.prserv.net/techmonkeyinternational/scan.jpg">

Miamitopaz.... I wanted to get my halo working without the fogs.
From what I've read, the rear fog lights only work when the front ones are on. The same could be done by using the fog as trigger and sticking a switch in between the fog light and the relay. This is probably more for cosmetics.

But thanks for the advice.

 

OK - this wiring setup won't work for what you have in mind. It is used by aftermarket alarms for interfacing to the parking lights - it does the opposite to what you want (you want to supply power to something by turning on the parking lights - this setup will turn on the parking lights via a remote switch aka the parking light output of an aftermarket alarm). I know because this is exactly what I did to get my lights to flash with my alarm setup.

What you need to do is provide power to your halos when you turn on your parking lights (so I understand).

The BMW light module has a lot going on inside. Each individual exterior bulb on the car has its own power wire coming from that module - it isn't like older designs where there was one switched wire coming out of the switch which would be split out to all the bulbs in that switched circuit (in this case, the parking lights). The individual power wire design is done for the most part so the lighting computer can determine the load at each bulb location and tell you if there is a blown bulb at that location - with the split method, it wouldn't be able to do that.

The best way to wire your halos is to locate one of the power wires for a front parking light (say, the left one) and tap into it. However if you put too much of a load on the wire, the computer will think there is a problem and will trip the "bulb out" display for that location.

So instead of wiring directly to that power circuit, you will use a relay (the same one as in that diagram you posted) which will provide a power circuit for the halo.

Terminal 86 would go to ground. Terminal 85 would go to the parking light wire (to activate the relay). Terminal 30 would go to your halo power feed, and terminal 87 (not 87A) would go to live 12 volts (through a fuse).

The relay draws little current so it "should" not trip the bulb-out indicator. If it does, then you may need to try one of the other parking light feeds and see if the computer is less sensitive to impedance change at the new location.

Does any of this help?

Mark

PS: See the bottom of that diagram for appropriate disclaimers!

 

Only problem with this is that the halos will blink when you hit a turn signal. I thought about this also. I think that basically If you find where the wiring harness from the trunk comes under the dash you can put a relay onto it, or you find the correct wires from the LCM and you can tap there. Thats wh yI was thinking of making an extension that I could start testing wires on the ribbon cable without damaging the cars wiring harness. thanks for looking into this though. I never have enought time on my hands to do this stuff

 

There are separate bulbs for parking lights and turn signals. Worse case, tap to the licence plate bulb.

Mark

 

There are separate bulbs for parking lights and turn signals. Worse case, tap to the licence plate bulb.

Mark

You can't tap from the front.... The corners are 5V or so for the parking and 12V for the blinkers. The bulb is a single filament type. When the parking like is on, I believe that the voltage isn't enough to trip the 12V relay. I'm assuming that the relay only gets tripped when the flashers are on.

You could probably tapped power from the license plate light or from the rear tail lights.... But they would have to be 12V power supply. I guess my problem is that I would like to get the tap from under the dash so I won't half to fish the wire from the back. I must be lazy or something.

I'm surprised that no one has really figured this issue out..... If anybody has done this, please enlighten all of us...

 

thanks for info mark, where are the wires to the rear parking lights? The front blinkers are the same bulb as the parking lights, at least thats what comes on with the headlight switch in the 1 or 2 position. Ideally the rear parking/running lights would be great, again does anyone know where do these wires run to under the dash?

There are separate bulbs for parking lights and turn signals. Worse case, tap to the licence plate bulb.

Mark

 

thanks for info mark, where are the wires to the rear parking lights? The front blinkers are the same bulb as the parking lights, at least thats what comes on with the headlight switch in the 1 or 2 position. Ideally the rear parking/running lights would be great, again does anyone know where do these wires run to under the dash?

Where did u get your halos from? If you have the harness just use battery power and connect it to ECU. It will be on everytime u start the car. JLevi can hook u up with the harness etc. I can get u info if u need it. I just did mine last weekend.

 

Where did u get your halos from? If you have the harness just use battery power and connect it to ECU. It will be on everytime u start the car. JLevi can hook u up with the harness etc. I can get u info if u need it. I just did mine last weekend.

We all know about the ECU hook up. That is very straight forward.

I just got my Day-light Running Light turned off by the dealer. I didn't want to have any lights on during the day.

Personally I think the halos would attract too much attention from the cops during the day time. In addition, I think the halos don't look as good without the parking lights on. So I'm thinking that I'll never use the halos without any other lights.

To those that sell these halos, any clue???

 

Carnage,
I want to get the halos and use the same config. you are trying to get. I am also trying to get a way to connect so the holo's turn on with the running/parking lights and NOT blink with the turnsignals. If you figure it out PLEASE post and PM me if possible, I will do the same. :thumbup:

 

Found 12V parking light source for halosa!!!

:woot:

Ok... This is for those that have been look for the answer...

I won't be telling people how to do the halo installation.

Take the kick panel off on the driver side using a phillips and a flat head screw driver. Crawl underneath and look for the harness leading to the LCM (Light Control Module). Cut open the meshed sheathing and look for the light purple wire with the dark purple stripes. This wire leads to the rear parking light on the driver side. I tested this wire with a multi-meter and this is it!

So here it is!!!

 

:thumbup: Did you already try it and know for sure this works ie halos only come on with parking lights? If so you da man! :bow: Thanks.

 

Still waiting for my halos.... should be here on Tuesday...

:thumbup: Did you already try it and know for sure this works ie halos only come on with parking lights? If so you da man! :bow: Thanks.

I haven't installed mine yet....
But the tap is for sure and this will work. I'm saying this with confidence because I have an engineering background.

I hope that BMW didn't change the wire color around for different model years. FYI, I have a 2003 M3 (I believe Nov 2002 production). If I were you, I would verify the tap with a digital multi-meter. But if you don't have one, go to the trunk and pull out the driver side light cluster. The second wire on shown in the following pictures is the parking light power wire. Make sure that the wire that you find under the dash leading to the LCM is the same color.

Good Luck with you install.

 

That works since the rear has sepearate bulbs??

I haven't installed mine yet....
But the tap is for sure and this will work. I'm saying this with confidence because I have an engineering background.

I hope that BMW didn't change the wire color around for different model years. FYI, I have a 2003 M3 (I believe Nov 2002 production). If I were you, I would verify the tap with a digital multi-meter. But if you don't have one, go to the trunk and pull out the driver side light cluster. The second wire on shown in the following pictures is the parking light power wire. Make sure that the wire that you find under the dash leading to the LCM is the same color.

Good Luck with you install.

 

This will work

That works since the rear has sepearate bulbs??

There is a dual filament bulb in the back for parking/braking. This has a constant 12V power supply unlike the front corner markers. Plus, this line has been tested with a digital volt-meter.

 

Additional info about power source...

When I was doing the testing, I was thinking about the walk-away lamps (pulling the high-beam stalk towards you with the key out of the ignition) and the independent right-side/left-side parking lamps (positioning the turn signal to either right or left with the key out of the ignition).

When you turn on the walk-away lamps, 12V will be supplied to the halos. But remember, you headlights will be on too and then turn off in 30 seconds.

Plus, when you position the turn signal to either side with the key out, the halos will stay off. You wouldn't want power going to the halos if only one side of the parking light is illuminated.

To conclude, the light purple wire with the dark purple stripe is still the ideal tap for parking light....

 

Carnage is the man

Finally after having this project in the Garage for a year and half its done. The wires are the same on a 2001 325i. Got it all wired up and put a wire thru the firewall. I pushed a metal coathanger thru the hole from the interior side towards the engine compartment, then taped the wire going to the eye's onto the end of it and pulled it back thru. Thanks for testing this Carnage. I guess I should have just started testing along time ago.

 

Halos wired to parking light..... Success

I just got my halos today from umnitza....
Got it all wired up to the wire that I was talking about.....
Working perfectly, just as I have imagined....


Patch- I'm glad that you got yours to work.

 

Thanks carnage! I was hesitant to get the halos if they were on all the time. Did you have to lenghten or modify the wires from the halos?

 

Thanks carnage! I was hesitant to get the halos if they were on all the time. Did you have to lenghten or modify the wires from the halos?

The halos are definitely worth it!!! I bought the umnitza kit. The harness comes with ample amount of wires. If fact, I ended up cutting some off to make my install cleaner. No modification is needed though. You can install it as is.

 

:thumbup: :thumbup:

 

Wish I would have seen this earlier, I could have saved you some hassle.
For future reference, here are the LCM pinouts...

http://home.att.net/~howersl/bmw/lighting_pinouts.htm

 

:woot:

Ok... This is for those that have been look for the answer...

I won't be telling people how to do the halo installation.

Take the kick panel off on the driver side using a phillips and a flat head screw driver. Crawl underneath and look for the harness leading to the LCM (Light Control Module). Cut open the meshed sheathing and look for the light purple wire with the dark purple stripes. This wire leads to the rear parking light on the driver side. I tested this wire with a multi-meter and this is it!

So here it is!!!

Worked like a charm on a '04 M3 Vert... Thank you for the great post! :bow: