Originally Posted by JFlightRisk
Vaseline isn't a conductor, so that's not the reason for your light remaining on. It's likely to be either a short, or a bad switch.
It is my understanding, that vaseline is in fact conductive, however dielectric grease is non-conductive.
edit… interestingly, the majority of sources I searched say that vaseline is conductive, but I just checked a jar with my volt meter and it does not conduct??