I wouldn't think it goes through the light switch. You don't need the light switch on for the dome light to work. I'm betting it feeds off of the ammeter. Do you have door switches for the dome light or a manual switch on the light itself?

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.