Is anyone clued up on car electrics? I have a problem where the radio reception is rubbish in my FRS. I have replaced the aerial and base, to no avail. I have also made a few observations. If sat in traffic and reception is hissy, I switch the engine off and the reception improves dramatically. I also noticed this morning when I started the car, that the reception goes bad 3-4 seconds after starting, and also gets significantly worse when I switch on my HID lamps (aftermarket).

Any suggestions, has anyone had similar problems?