DSP Wiring

[BMWx5e53]

Wiring diagram of the DSP amp, showing which wires go where and what each of the 3 connectors do.

Mines a Facelift 2004 model, 4.8, with widescreen satnav and subwoofer.

The pinouts for the 15 pin connector (X18771 - Black Connector) are:
PIN - CONNECTION
1- Sub 1 +
2- Sub 2 +
3- LH Rear loudspeaker - (Touring LH rear speaker ground) YELLOW
4- Radio on/antenna signal
5- RH rear loudspeaker + (Touring RH rear +) BROWN
6- Sub 4 -
7- Sub 3 -
8- Terminal 30 connects to Fuse 56
9- Sub 1 -
10- Sub 2 -
11- Touring LH rear + BROWN
12- Touring RH rear - BLUE
13- Sub 4 +
14- Sub 3 +
15- Terminal 31 connects to Ground Point


The pinouts for the 18 pin connector (X18772 - Black) are:
PIN - CONNECTION
1- Not used
2- Low freq. negative (-) signal - Transceiver/charging electronics
3- Not used
4- Not used
5- I-bus Signal Line - Splice X18344
6- Not used
7- Not used
8- RH front speaker - Connects to Radio
9- LH front speaker - Connects to Radio
10-Not used
11 Low freq. voltage (+) signal - Transceiver/charging electronics
12-Not used
13-Telephone mute signal - Transceiver/charging electronics
14-Not used
15-Telephone ON signal - Transceiver/charging electronics
16-Not used
17-RH front speaker + - Connects to Radio
18-LH front speaker + - Connects to Radio


The pinouts for the 26 pin connector (X18773 - Blue) are:
PIN - CONNECTION
1- LH front woofer + BLUE+WHITE
2- LH front woofer - BLUE+BROWN
3- Not used
4- RH front mid-range - BROWN
5- LH front mid-range + BLACK+GREY
6- Not used
7- Not used
8- Not used
9- RH front mid-range + BLUE+YELLOW
10-LH front mid-range - BROWN+GREY
11-Right rear mid-range speaker/tweeter + BLACK+WHITE
12-RH front tweeter + BLUE
13-RH front woofer + BLUE+RED
14-LH front tweeter + YELLOW+RED
15 LH front tweeter - YELLOW+BROWN
16-Left rear mid-range speaker/tweeter - BROWN+YELLOW
17-Not used
18-Not used
19-Left rear mid-range speaker/tweeter + BLACK+YELLOW
20-Not used
21-Not used
22-Not used
23-Not used
24-Right rear mid-range speaker/tweeter - BROWN+WHITE
25-RH front tweeter - BROWN+BLUE
26 RH front woofer - BLUE+BROWN

The number of speakers are:
2 in the rear door cards = 4
2 in the front door cards = 4 (up higher near the outside mirrors)
2 in the dash up high (base of the windscreen)

Highlighted in Bold are the ones you will need to tap into. I have also included the colours.
Essentially, if looking at the car from the back you will need to tap into the following from the 26 pin connector:

Front Left (Passenger):
Tweeter - 14, 15
Mid (in Dash) - 5, 10
Sub - 1, 2

Front Right (Drivers):
Tweeter - 12, 25
Mid (in Dash) - 4, 9
Sub - 13, 26

Rear Left (Passenger):
Tweeter/Mid - 16, 19
Sub - 3, 11 [15pin Connector]

Rear Right (Drivers):
Tweeter/Mid - 11, 24
Sub - 12, 5 [15pin Connector]

[wpoll]

I'll have a look over the diagrams in the morning and confirm the pin assignments for the dsp amp connectors, from the e53 docs online at bmwtech.ru

*edit* forgot to ask - what are you tapping into the loom for - adding another system?

[BMWx5e53]

Hi, I am installing a new Android Head unit.
The head unit will be hooked up to an amp (via RCA cables) to power the door speakers (up-rated door speakers) and a subwoofer.

So essentially, I would like to use the existing car wiring which feeds the speakers, the only thing I want to do is tap into them and hook them up to my amp.

I need to power my android headunit, so would you also be able to tell me which is the Pos and Neg (Ground) in which connector which fed the widescreen satnav bmw original headunit? I also will need a switched power feed and a illumination feed (so that when I turn my head lights on, the android headunit buttons light up).

[wpoll]

I started putting together all the info. you need and it's fast becoming a large collection of files.

It might be easier for you (and more informative) if you can get the BMW Tech WDS site running on your computer (Windows is best).

WDS BMW Wiring Diagram System - X5 E53

You'll need Java and the Adobe SVG plugin. You'll also need to set a Java security exception for the bmwtech.ru domain/website.

I can tell you that the pin out you have in your first post is essentially correct.

The Amp. in the left side pocket is called module A18.



X18771 = 15-pin (black)
X18772 = 18-pin (black)
X18773 = 26-pin (blue)



See the attached PDF for details (virtually the same as your list).

The Radio in the boot is called module N9. The main connector on this is X18126 and the connections on this vary from year to year.





The main display unit is module A196.



It has two connectors - X18801 and X18802. Wiring details are in another attached PDF.



Both X18801 and X18802 have the same pin layout (shown above).

I can provide wire colours to go with all this data, as the BMW Tech WDS site has this data on the actual circuit diagrams - sadly the colour data is not in table format.

Hope all this helps ya!

[jopecasa]

wpoll,

Great Info!

Thanks for sharing!

[wpoll]

Oh, forgot to mention - to answer your Q2 - the rear door "woofer" speakers are on the first connector on your list (the 15-pin - X18771) and are labelled "Touring" (dunno why).

X18771, Pin 3 & 11 - Left rear low-range speaker

X18771, Pin 12 & 5 - Right rear low-range speaker

[BMWx5e53]

Wow. This is extremely useful. Many Many Thanks.
Im just trying to get the WDS to run on my machine, I have downloaded the SVG Viewer, but I am running wiondows 10.

[wpoll]

Originally Posted by BMWx5e53

Wow. This is extremely useful. Many Many Thanks.
Im just trying to get the WDS to run on my machine, I have downloaded the SVG Viewer, but I am running wiondows 10.

Windows 10 will be a challenge (in more ways than just this!) - I'm not sure if the Edge browser works with Java and I know Chrome doesn't - you might need to try Firefox, the latest Java, then create the exception in the Java control panel.

The WDS system is leaning on some pretty old tech but it works well on my Windows 7 with Java 8b91 and IE11.

I see you have updated the bold items in your list. If I get time in the next day or two, I'll make up a table of those connections along with all the matching wire colours.

Can you read colours in German? It's pretty schwarz and weiss.

[David D]

Just making sure, but is the OP aware that you cannot connect an aftermarket amp directly to the stock speakers without some sort of crossover?

[wpoll]

Originally Posted by David D

Just making sure, but is the OP aware that you cannot connect an aftermarket amp directly to the stock speakers without some sort of crossover?

By "crossover" do you mean some manner of frequency division so that each speaker is only supplied a frequency range it can reproduce? If so, then you are correct, as the OEM system uses an active crossover design in the amplifier.

But so do many after-market models. An unit that provides individual output for low-, mid- and high-range speakers wouldn't need a crossover. Such a unit would need to have at least 8-10 speaker output pairs. A simple 4 output "stereo" would need a crossover, as you suggest. A simple passive crossover or filter on each output would suffice, although an active one would be better. More complex/expensive/troublesome-to-install though!