Yes Randy, you will need a display. I used a 4.3 inch TFT display from Amazon and had excellent results. Check my other reviews for the exact model I used. It had a 480x272 resolution display, the brand was SecuityIng and It cost $26.55. All of the cables you will need are included and it is very easy to hook up. The most difficult part of the installation will be finding the proper power wires in the car to interface with. A volt/ohm meter will help with this. I hope this information is helpful to you.
The camera is wired easily to your reverse light wiring for power and chassis ground can be attached anywhere to body of vehicle. The video connection is a standard RCA (Banna Plug) connection just like the audio connection on the back of a stereo reciever like in your house. This RCA connector can be connected to a small monior placed in the vehicle or if you have radio with a screen on that accepts video input... it can be plugged into the video connection in the back of the stereo. When you place the vehicle in reverse the camera is powered by the rear reverse light turning on... this automatically makes the video on the stereo swtch to video mode until you shift to a different gear selection like drive. This is the best way to configure your installation. Otherwise you have to turn on an external small monitor to see the video. Works best with stereo that has a built in video screen... small or large screen works on either one.
It does require some type of video monitor. I have mine connected to the video input port on my GPS. The camera also requires 12V for power to operate. It is best to connect to the backup light so it only operates when the vehicle is in reverse.