Why can't I find the 3-4 bulb, bar style vanity lights with the built in switch on the mounting bar? I have wooden ones in one of my bathrooms with a switch on the side but it is impossible to find these anywhere. I need 2 more for a tenants bathroom that doesn't have a wall switch & the existing vanity lights are beat and need to come down. It an older home & I don't want to deal with trying to wire a wall plate. what's the deal why can't i find these things? thnx