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Old 10-07-2011, 10:07 PM   #324
steve.325i
Registered User
 
Join Date: Aug 2008
Location: Brampton, Ontario, Canada
Posts: 763
My Ride: 2003 325i
Hi Niki, yup, I follow you. My only error was that I 'assumed' you has the original cable supplied with the usa-spec because of the picture in your port # 308. My fault.

How long are your wires from the HU to the usa-spec? The shorter they are, the less coupling will occur. If you can seperate the i-bus/12v/gnd from the audio-L-R-gnd, that will help as well. Simply twisting the audio ground wire around the two audio lines (L-R) may be sufficient - approx 1 twist per inch is ideal.

I hope this helps. I don't think there is any reason for you to purchase an interface at this point. You have it working, you just have to clean it up a little bit.
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