Did a search and couldn't find anything that addressed whine when cold (not engine, but outsaide). The colder the louder. When it's warm nearly no whine, therefore I don't think it's a ground. Could be wrong! Also read that an amp can make a whine worse, does that pertain to cold outside. Doubt that too amps inside. Really thinking alternator, but don't know how these filters are intalled. Will they do anything to the reception?