We currently have an old free standing light post in our front yard. It has rusted at the base and is falling over. (Same thing happened to our neighbor's) We want to ripe it out and cover up the spot. What do we do with old live electrical wires after the post is removed? we don't know where it exits the house or where to access it from the house. It is on the same circuit as our front porch light and garage, so we can't just shut off that circuit. Thank you!