RNS-E - fitted Bluetooth now have whine through speakers?

[electricfurnace]

Fitted a genuine Audi bluetooth kit to my RNS-E in my B7 RS4.

Works fine but I now have a whine through the speakers which increases on accelerating?

Any ideas? Harness was plug and play. Sounds like a grounding issue?

[harding]

Pulled out stereo, located brown bose wire in pin 7 in green connector in quadlock.
Pulled out wire and grounded it a screw on back of head unit.

Something tells me this has something to do with it...

[obikaii]

I had this a while ago & it was the amp that was causing the whine,try disconnecting it.
I disconnected mine & was gonna get a new one,but when I reconnected it the whine was gone,but it does come back from time to time.

[electricfurnace]

Pulled out stereo, located brown bose wire in pin 7 in green connector in quadlock.
Pulled out wire and grounded it a screw on back of head unit.

Something tells me this has something to do with it...

Dont think so as before i fitted the bluetooth but after doing the bose mod it was fine?

[electricfurnace]

I had this a while ago & it was the amp that was causing the whine,try disconnecting it.
I disconnected mine & was gonna get a new one,but when I reconnected it the whine was gone,but it does come back from time to time.

How do you disconnect the amp mate?

[MikeFish]

Can you undo the bose mod?

[electricfurnace]

Yep just undone the bose mod, still whining

[electricfurnace]

Still whining! Really odd. Bluetooth harness issue maybe?

[obikaii]

You can unplug the amp from the boot,its behind a removable pannel,drivers side,the lead has a red clamp that you need to unclip.