Hi, I hope someone can help.
I have recently fitted a USB charging point on my MK3.
I also have a 3.5mm Jack socket fitted on my retro radio which I connect to my phone via its ear piece socket....
When I plug the Phone into the Radio via the 3.5mm Jack it works and Sounds Fine, However as soon as I plug the Phone Into the USB Charger I get interferrence over the speakers...
where to start