I've got a 62 chevrolet truck with the basic am radio. It had not been turned on since 1981. I opened it up, cleaned out the dirt dobber nests, cleaned it up and turned it on. It works! I have had the original speaker reconed, bought a repro antenna, installed all in the truck and it sounds fine but I've got noise, either ignition or generator. The caps check O.K. with a voltmeter, but still could be bad. Are these generic from year to year? Could I have another problem in the radio? The only glitch in the radio is it may not be as loud as it could be. Thanks.