Posi-Products Connector Kit
Crutchfield Customer Review (What's this?)
I personally have never used a wire connector. I in the past, cut and solder much of the wiring I need to do... And it hasn't been much. However, these connectors are easy to use. I used them for the Pioneer ND-BC8 camera I installed with the Pioneer AVH-X5800BHS head unit. I tapped aux power (red wire) at the harness & tapped the reverse wire for the head unit. As I said earlier, I had little experience using wire taps/connectors, however these were very simple to use.