Sometimes it takes threads like these to make people aware of potential problems... .
If you could feel the fused wire that controls the drivers side box (which also controls the fog's) you would instantly know that the wire inside is definetly warm. My point is, if the Brite box people say you can upgrade your Fogs with 55w bulbs (from 45w bulbs) WITHOUT having problems with addition heat, then you shouldn't have problems. But i'm telling you, that wire is warm through it's insulation. I can offer no other explanation for the Fog's not turning off--They don't release a schematic diagram as to how they work, so I can't say anything else. But I can tell you, heat in electronics is a killer. I can't see this box lasting very long. I live in the country and use my boxes more frequently that city folks. That means about every night on my way home, they will get 15-20 minutes of use.