I just got an interial FM aerial, as it means I can get rid of the one on the wing now, now it does work and it seems to work quite well, but when I turn it up past a moderate volume, it becomes all distorted. I've no idea what's going on.
The new aerial is plugged into the radio socket on the back of my headunit, and also into the remote feed cable at the wiring block, mind you it is also plugged in there with the remote cable going to the amp, could this be causing interference?