Leave the wires bent into hooks if you will be using the terminal screws to connect the new device. If you will be using the holes in the back, cut the wires right below the hook so you will have a straight piece to insert into the holes. Strip about ½inch of insulation off the copper to make the connection.
To install a fixture using a coupler, thread the rod into the center hole in the mounting strap and set the rod depth so the fixture base will fit snuggly against the ceiling when it’s installed. Measure the depth of the cover plate to estimate placement, precision isn’t necessary here, small adjustments can be made to the position after the installation by turning the coupler nut. Be sure all the wires are stripped for splicing, hold the fixture up and feed them through the threaded rod into the outlet box.
A short piece of wire spliced to circuit wires and capped with a wire nut. Used for making connections to a terminal screw on a device such as a receptacle or to a grounding terminal inside an electrical box.
In a room with old plaster of at least ¾inch thickness, an armored cable or greenfield can usually be run under the baseboard by chiseling a channel along the floor wide enough to bury the metal casing flush with the wall surface. The metal will protect the wires from nail punctures with this method, but care should be used when nailing baseboards to miss the cable.