Re: FM stereo interfence, Sensibulb LEDs and 12V Jacks
Your radio sounds sensitive to noise. On which lines, I don't know, but maybe the power supply wires - GND and 12V.
Does it have a shielded antenna cable or just a wire stuffed into the antenna socket (as mine does)? If the latter, switch to the former.
You could try putting a ferrite on the power supply wires, as close as possible to the radio.