I am installing motion light outside my garage this weekend. When I went to check the current wiring out in the garage, I noticed that the individual who I bought the house from had the garage door opener running from a receptacle w/14g wire...this is on a 20 amp circuit. I am about a year into my first house and slowly becoming a DIYer...but this just doesn't seem right. Is it safe to assume that I should change that 14g wire to 12g? The only pieces drawing power from this circuit currently are the garage door opener and a light.