1st Gen R50 Cooper Most liked posts in thread: 2003 Cooper radio aux input question

Based on build date, the early 02 builds will not have an aux function.

The radio won't show "aux" unless there is a jack installed it will only cycle through the available options until you install the harness.

Check your drivers door jam for the build date.

Aux Jack

 

That's a common and known problem. You need to use a ground loop isolator between your device and aux input:
Amazon.com: PAC SNI-1/3.5 3.5-mm Ground Loop Noise Isolator Works with iPod/Zune/iRiver and Others: Automotive

 

I of course pulled the whole center apart. If you were really able to get it in there with out taking anything apart I feel like a real dummy. The one odd thing about mine is that if I have whatever device connected to the aux input and charging at the same time, aux will not be an input option.
Anyone else experience this?

 

That explains a lot I have electrical noise coming from my speakers sometimes. I also have it when I plug the phone in to the radio at home. There it happens when I get a data feed. I think this may solve both problems.

 

Thanks for the tip.