Purpose of wire connector

Can anybody tell me what is the purpose of this wire or what's it for? It's located on the inside window trim and attach to the trim itself

Originally Posted by GabesJH82

Can anybody tell me what is the purpose of this wire or what's it for? It's located on the inside window trim and attach to the trim itself

Heh heh... that darn connector cost me an hour or more in search time.
I never did figure out what it was for.

I sure hope it's not something important!

See details here (see post #60):
- One user's experience with diagnosing the front left driver door window regulator (1)

And, see details here (see post #56):
> E39 (1997 - 2003) > Was Loctite - Now it's: How NOT to fix a BMW E39 window regulator (mistakes galore)!)

See also the many photos in these threads:
- How to diagnose and replace a BMW E39 front driver side door window regulator (1) and how to remove a BMW E39 front passenger side door window regulator (1) (2) & the unintuitive trick to effortlessly loosen and tighten the astronomical cable tension without damaging the front door window regulator (1) & how to rebuild and restring your current E39 front door window regulator (1) & scores of pictures showing how NOT to remove & repair your front door window regulators (1)

Originally Posted by bluebee

Hmmm... when I labeled the wires, there were 10 connectors but only 9 places to connect them.

1. door light (1 connector),
2. memory module (1 connector),
3. master switch (3 connectors),
4. woofer & tweeter (3 connectors),
5. air bag (1 connector).
6. ? (1 connector)

Idk either whats it for but it does connect to the memory module on the door. I'm thinking could it be some kind of security sensor if someone tries to break in, than the alarm will sound? Not sure what its for. Will be nice to know tho

It's either for the heated or folding mirror option.

Don't think so has nothing to do with the mirror as it has its own separate harness

Originally Posted by GabesJH82

it does connect to the memory module on the door

Maybe we're talking about different two-wire connectors?
The one I am showing is clearly maroon, and has red/white striped and blue/white striped wires, and it definitely does NOT connect to my memory module.
Here's an old picture of the wire set going to my memory module.

Originally Posted by GabesJH82

Don't think so has nothing to do with the mirror as it has its own separate harness

I'm still unsure of what the maroon two-wire (red/white + blue/white wires) connector is for - but there was a discussion of what it might be for over in this thread, starting at about post #64 to about #68.

Originally Posted by Steve530

AFAIK, they're all heated when the ignition switch is in position 2. See the owner's manual p. 57.

Check Bentley's vol 2 p. ELE-667 connector X257. WS/RT and WS/BL wires connect the electochromic rearview mirror to the driver's side electorchromic side mirror.

Originally Posted by bluebee

If it's not for the chromatic mirrors, I wonder what the M5 folding mirror connector looks like?
- How to add M5 remote power folding mirrors to your E39 (1) (2) (3) (4) (5)

NOTE: I know nothing about the M5 folding mirror connector so I'm just asking if anyone knows the shape of 'that' connector?