Radio pulse noise suppressor

VW Air-cooled Super Beetle has an original Amplitude modulation Radio and it still works relatively well but with sparking noise. To tell the truth, I have been suffering from it from the beginning of this automobile. The spark pulse noise became lauder and lauder these days, so I made up my mind to counter-measure for this malfunction. First of all, Ferrite magnet core devices were applied on the antennae line and power supplying plus line. Though they were all from my junk box, the result of suppressing noise was so remarkable as to surprise me at all, how easy task it was! Much more earlier mesure like this should be attempted, it's so regrettable now. Trifle and primitive parts and application work took enough effect to be satisfied as a matter of fact! The performance of this 50 years old AM Radio equipment would be continued as it is for the time being. A little recent FM/AM car radio is prepared as an alternative with the same size hole on the dashboard, and any time will do, their replacement.