The installation of the device on the dashboard is easy. The application of the film on the windshield in halfway horizontal position is a bit trickier. Included is a power cord that is plugged into the cigarette lighter socket. I had before, since now this is Gerödel with a cigarette lighter cable in the long term not very handsome and practical, to let then route the power cord of my workshop and connect to ignition dependent current. This was not necessary, however, because I realized that the device does not "a / ignition off" responds to how to do this, for example an accident camera or a portable navigation system. Terse response from Valeo: "As can be seen from the operation manual to the device with the on-off switch turns on and off." Toll! With such a high-priced part of a brand manufacturer, I expect this at least respond to ignition-related power to incorporate such a circuit in the device, is expected to cause only a few 10 cents extra cost. At least prompt and trouble-free withdrawal through Amazon. I hope there will soon be a useful instrument of this or any other manufacturer ...