Remove the dedicated connector of the navigation unit and insert it in between with a single touch. This is a coupler type, so no wiring is required. (Body Grounding and Switch Installation Required) *If you are not confident in installation, please consult a vehicle seller or a qualified mechanic. ■Compatible models (monitor number): 26022/56064/56065/56086/56095/56096 Alphard (Vellfire) Hiace Estima Prius; ■ Watch TV and switch to navigate with a switch while you are riding, and your passenger seat will not get bored. (Please do not look at the screen while driving or operating) *The color of the wire jacket may change without prior notice.