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Old 04-01-2011, 02:49 AM
FunkySAM FunkySAM is offline
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Location: London
 
Join Date: Apr 2011
Posts: 1
Mein Auto: 320D
Quote:
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!)

Excellent!

Paul
Hi,

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
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