Name these electrical connectors...

[tomjonesBT33]

As I mentioned in another post (https://z4-forum.com/forum/viewtopic.php?f=3&t=118033) I recently acquired a 2004 Z4 from my brother in law. It needs some work and a thorough cleaning. I've been going through the car to clean it up and came across this set up electrical connectors/boxes and I'm hoping that you all can identify them for me. I've labeled them numerically in the images below. Please tell me what each of these are for.

Between seat under the rear storage box


In the truck on left side against the back wall


On the driver's side (LHD) B-pillar behind the speaker trim panel


On the passenger's side B-pillar behind the speaker trim panel

 

[paulc_bkk]

From what I can see in the photos, 4 and 5 are definitely the pre-wired for CD Changer wires

I’d hazard a guess that based on the location of some of the wires, it has the Oem Bluetooth system but parts of it aren’t connected

 

[srhutch]

What are you trying to fix/achieve that you need to know all these connections?

 

[enzed4]

13 = Folding top module 6135719999
10, 11, 12 are part of the wiring harness for the soft top, they need to be disconnected when removing the top.

 

[tomjonesBT33]

What are you trying to fix/achieve that you need to know all these connections?

At this point in the ‘recommissioning’ process, I just like to know what I dealing with.

I’m a pretty experienced home mechanic but this is my first BMW. My other daily vehicle is a 2008 Jeep Wrangler which is simple compared to this car. I’ve also got a 1967 Lotus Elan that I’ve been restoring.

 

[Liam22]

#11 is the audio harness.

I *think* #4 is the centre storage light.

 

[enzed4]

#11 is the audio harness.

I *think* #4 is the centre storage light.

Pretty sure 11, 12, 13 are part of the soft top wiring harness, not audio?

 

[Liam22]

Admittedly, mine is a coupe, but I just removed the audio wiring.

 

[kic_Mike]

4&5 are 100% CD changer wiring (if you want to add a Bluetooth module you can get one for these too)

4 definitely isn’t the storage light as suggested above - the storage light switch is literally a pressure switch that is pushed when the door opens (and is obvious when you see it)

 

[ph001]

#8 and #9 are into the ULF Module for the bluetooth and phone integration.

 

[enzed4]

Admittedly, mine is a coupe, but I just removed the audio wiring.

Softop CVM module and plugs are on the opposite side of the wiring in your pic (passenger side on RHD). Well, they would be if you didn't have a coupe