I have three outdoor lights on the unattached garage and I want to be able to turn them off and on from either the house or garage. I have a conduit between the house and garage and I know it will take 3 way switches, the lights on this ckt are wired with #14. It's about 80 feet between house and garage, I was wondering if 14-3 is ok to use or do I need 12-3. Also since it will be in conduit can I use indoor wire or will it need outdoor. Thanks!