Aux in

[Sxt1]

Hi,
My first post - thanks for reading. Has anyone installed a “Aux in” jack in parallel with the factory jack? I have an Android screen, and it annoys me to have a cable back from dash back to the Aux in jack.
Thanks for any possible solutions

[B21]

You could use a y adaptor and run it through a small hole in the centre oddments tray under the centre trim..?

[DavesZed]

In short, YES

So it turns out that BMW made a USB/AUX socket that has a 6 pin plug for the AUX as opposed to the standard 4 pin. These extra pins allow for an additional input to the rear of the socket.
So what I did here was to buy a lead with a 3.5mm socket on it, cut it and solder it onto the cable. This then gave me a hidden AUX socket (I placed it under the centre console) which I used for my Android screen.
Alas I have no photos of my installation.
Here is one of the sockets complete with the correct loom/plug that would be required to adapt...

https://www.ebay.co.uk/itm/314213526...Bk9SR4LV4s39Yg

I've attached the wiring diagrams for the standard 4 pin and the 6 pin showing the difference.
4 Pin...
Pin 1 = Ground (Purple)
Pin 2 = Right (White/Green Stripe)
Pin 3 = Left (White/Red Stripe)
Pin 4 = Shield (Possibly not connected)

6 Pin....
Pin 1 = Left (Purple) (Swap with original White/Red of 4 pin plug)
Pin 2 = New Left (White) going to Tip contact.
Pin 3 = Ground (White/Green Stripe) (Swap with original Purple of 4 pin)
Pin 4 = Right (White/Red Stripe) (Swap with original White/Green of 4 pin)
Pin 5 = New Right (Yellow) going to Centre contact.
Pin 6 = New Ground (Black) going to Base contact.


Like I say I did this some time ago and it worked great
Hope that helps.