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General E46 Forum
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Old 02-22-2015, 08:35 PM   #1
travie46
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What is this wires for ?

I was working with my dome light unit and noticed this extra connection. I know it's not for homelink or microphone because im already using those connectors.

The connector are too close to the microphone one.

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Btw: I'm just curious
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Old 02-22-2015, 09:59 PM   #2
peytonracer4
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possibly motion sensor for alarm.
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Old 02-22-2015, 10:21 PM   #3
travie46
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Originally Posted by peytonracer4 View Post
possibly motion sensor for alarm.
the motion sensor is located in the center of headliner. I was thinking that was for rain sensor but the connector is too bigger.
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Old 02-22-2015, 10:56 PM   #4
peytonracer4
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oh sorry i forgot the dome light is up front. i haven't driven my e46 in a while

could be sunroof switch. could be homelink mirror. maybe phone connectivity (not bluetooth)
not sure.

edit: just read the OP again. really not sure. my only guess is for the alarm somehow.

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Old 02-23-2015, 12:10 AM   #5
glhx
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It's in the home link panel. The sunroof switch, homelink and 3 lights go in there. I believe there is a blue tooth set up option as well that goes up there.

Not a great picture for reference. It shows the wires but barely enough in the background to see what we're looking at.
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Old 02-23-2015, 12:38 AM   #6
TerraPhantm
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No one seems to know

I found a better picture of the connector here:



I know the gray/red carries the instrument illumination signal. Not sure about the rest
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Old 02-23-2015, 02:29 AM   #7
SilberVogel
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Quote:
Originally Posted by TerraPhantm View Post
No one seems to know
No kidding; Delmarco posted this question all over the place. Here's a few of his threads:

What is this Prewired 5 Pin White Flat Connector Hidden in my Headliner Console?!
E46Fanatics: http://forum.e46fanatics.com/showthread.php?t=713738
E46Zone: http://www.e46zone.com/forum/topic/1...-console-panel
Bimmerfest: http://www.bimmerfest.com/forums/sho...d.php?t=405798
Bimmerforums: http://www.bimmerforums.com/forum/sh...onsole-Panel-!
Bimmerforums UK: http://www.bimmerforums.co.uk/forum/...e-panel-t27770
Bimmerwerkz: http://www.bimmerwerkz.com/forum/3-s...tor-67510.html
A lot of the responses have been the same, but there have been these:

Quote:
Originally Posted by delmarco
. . . It is definately NOT Alarm, Homelink, Mirror, Bluetooth MIC, Sunroof switch.

The closest thing a 5 pin connector in that region would do is the BMW SOS/Assist function and in fact it looks like the connector on the BMW SOS switches on later year cars.
Quote:
Originally Posted by xi_ter View Post
Looks like prewiring for a run to the Nav computer from the GPS receiver and antenna, based on 5 and 6 wires and the colors. See Bentley page ELE-296. The prewiring for the alarm sensor has fewer wires.
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