Z4-forum.com

i'm afriad I dont have em bud :/

A few helpful links

https://www.bavauto.com/Assets/inst_pages/ins314.pdf

http://www.zpost.com/forums/showthread.php?t=79747

http://www.bimmerfest.com/forums/showth ... =Z4+Aux+in

Hi, I'm constructing the cable now, however since images are not available its a bit longer to carefully read.
Can you tell me how the coloured pins map to the cables i.e. what colour pins (blue, red, green) should be connected to which wire (1, 2, 3) as i can't seem to figure this out without the images.
i.e how to the red, blue green plugs correspond to the silver, brass and loop terminals on the stereo socket.

ive noticed that everyone is making these cables for pre 2006, any reason why this wont work for post 2006?, brought a cable from ebay, doesnt look like its got any resistors or caps which might explain why its not working

After reading this thread I decided to build My cable Yesterday , Worked 100% first time . Thank You for all the advice .

As a new Z4 owner job one was an aux cable ... and the vents proved problematic. little screwdrivers, big screwdrivers, credit cards et al proved not up to the job of getting the vents out. much frustration and stressing about making a hash of the plastics

Problem solved .. bent keyrings and the vent just slid out like butter .. no force at all required. I'm sure i've seen somewhere where someone did this but most people seem to recommend using drivers ... all i can say is dont bother.

method .. take 2 keyrings ( I used just one but two would be even easier), unfurl it a bit. Leave a bit of a loop in the end. insert the unfurled end upwards into the gaps with the retaining hooks. Twist 90 degrees to get the clip. Pull downwards to release the clips ( no force required). Presto - you can pull the vent out either by grasping the sides or just pulling on the loops ...

Edit, wrong thread!!

For anyone interested, the capacitors block DC from getting to the Aux connector. This is so the radio can "read" the resistor between the stereo outputs and switch over to the Aux function. This keeps whatever is connected to the Aux connector from loading down the radio's resistor reading. I just put the Mini version of the cable in my Z4 2003 E85 2.5L DSP no Nav and it seems to be lacking in Bass response. IMHO the CD is best, FM a little less clarity, and Aux low on bass and clarity. Some of this might be IPhone MP3 lack of fidelity and some of it might be the capacitors they use in the cable. The resistor capacitor combination is a high pass filter but the DIY values given here are 300K and 0.22uF which should be in the <10Hz range. I'm not exactly sure what they used in the Mini cable. I plan on trying some music uncompressed (not mp3) through the Aux and see if that is any better. If not, I plan on disassembling the Mini cable and see what they used. FYI also, I used a Hook and Pick Set to remove the vent. Never could get it with a screwdriver. Super easy with the pick set W942 (v3).

I used a CD and played it thru the speaker out on my laptop into the Z4 Aux and then used the same CD in the Z4's CD player. There is definitely a difference in bass. The Aux lacks the low end punch. Both are EQ'd the same on the DSP radio. Unless my laptop hardware rolls off some of the bottom end on the speaker out, the Aux is not as good as the in dash CD player.

Hi all..

Feels like I have tried everything, have been endeavouring to install an aux cable in my 03 z4 without success...

I have the Capacitors in line with the 2 no. inputs and the resistor bridging as the wiring diagram.

I have tested continuity with the multimeter.

However the aux function doesnt appear on the stereo when installed in the residual port shown.

Hoping someone can point me to the error of my ways..
When installed goes in the empty port here.

You do not need (or want) capacitors in the circuit as they act as highpass filters and will degrade the sound. A 300K 1/4 or 1/8 watt resistor across the left and right signals (white and yellow in your case) is all that is required.

If you have an uncontrollable urge to add caps then make sure the resistor is on the head unit side of things