also these male spade connectors to plug into the taps
Amazon.com: 3M Scotchlok Nylon Fully Insulated Male Spade Type Connectors 22-18 Gauge (Red) - 100 Pack: Car Electronics
same as above, blue for bigger wires, red for small. check details on which gauge to use. most of my stereo wiring i use blue, unless it comes with real skinny wires.