Test for continuity, voltage, current and resistance. Both analog and digital meters are available. A digital meter is simple to use, easy to read and inexpensive. Analog meters are not as easy use or read and are becoming obsolete.
Decide on the location for the new electrical fixture and where the source will be. Determine inside of which walls and ceilings the cable must be run. For example, with a new ceiling fixture using a source from an existing wall receptacle, the cable will have to be run inside the wall cavity, through the top plate, into the ceiling cavity, and on to the new fixture.
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.
If you are using the holes in the back, push them into the proper holes until the clamp engages and locks them in place and there is no bare copper showing. Pull on each wire to be sure it is securely connected. Connect the ground wire to the grounding terminal on the device and any grounding terminals in the outlet box.