I have 2 individual 75w lights in my garage with another leg running into the attic powering another 75w bulb all off one switch with 14-2 wire. I would like to place a switch in-line to power the attic light separately and also add 2 to 4 more lights in the attic. Is this possible on the existing circuit as it stands? If somebody were to leave the attic lights on accidently I'd like to know the attic lights are off when the garage lights are turned off. I pulled the cover to the attic light and noticed the bare wire is simply sitting loose in the plastic housing, is this acceptable? Thanks.