Generic 6 volt question

Posted by Packard Newbie On 2019/12/17 18:55:28

While not a Packard-specific query, I was wondering why #51 and #55 bulbs (correct bulb #'s for my '39 Six dashlights) are listed as 7.5 and 7 volts, respectively?? Other bulbs I have purchased (larger ones) are listed as '6 volt'. My thought is these will work fine, just curious as to why the varying voltage designation? Chris