Bimmerfest - BMW Forums - View Single Post - Auxiliary Audio Input Retrofit (Questions...)
View Single Post
Old 04-01-2011, 02:49 AM
FunkySAM FunkySAM is offline
Registered User
Location: London
Join Date: Apr 2011
Posts: 1
Mein Auto: 320D
Originally Posted by nitram_luap View Post
OK... I'm officially an idiot!

On closer inspection the harness is not quite JUST an extension cable. At the end of the install document is a circuit which (when I looked at it properly) shows a small resistor in the circuit between the L & R channel wires. That's how it *knows* that the AUX cable is connected!

I decided to test this out. I deliberately shortcircuited the L & R channel wires as they come out of the wiring harness and voila! - AUX now shows up when cycling the MODE button. When I remove the short, AUX disappears!

Now... all I need to do is buy about $3 worth of plugs, wire and the required 300kOhm resistor and I can make my own harness (for about 1/20th of the price of the BMW one!)



I've been trying to do this for the past 2 months without success. I have a 2005 (previous moodel) 320.
I've shortcircuited pins 8 and 9, but still do not get the AUX on the screen when cycling the MODE button. Does this mean that it won't work with my radio?

many thanks
Reply With Quote