Thank you for viewing. This is the built-in switch type. I only opened the outer bag for the purpose of taking photos. The inner bag is unopened, and of course, it is not connected. OBD vehicle inspection compliant product By scanning the QR code on the instruction manual, an installation video will be displayed, so if you are familiar with this type of work, you may be able to install it yourself. I bought it thinking of asking a mechanic acquaintance to install it, but my acquaintance became very busy and I couldn't ask them, so I decided to sell it. Wiring kit that allows TV viewing while driving, with route guidance function. - Product Name: Mieterre - Included items: Wiring kit, connector, instruction manual - Compatible models: NPKG06G, AMZPLUG, MXPLG - Functions: TV viewing possible while driving, with route guidance function