Hi, I have just bough a 2004 X5 E53, which has a navigator and an aux av input, which unfortunately is mono.

I've seen in different posts that the head unit supports fixing the OEM Aux stereo input (part num. 82 11 0 149 391), to support MP3 audio, which is stereo.

Which means, the head unit accepts stereo aux input.

My question is, is it possible to convert the standard vdeo + mono audio input into a stereo audio input (no video)?