How does a wireless backup camera get power?
The backup camera monitor goes inside the cab of your vehicle and is powered by a 12 volt plug. There are usually a few mounting options included like a suction cup windshield mount or adhesive dash mount.
How do you keep a wireless backup camera on all the time?
To stay on all the time you can connect 12V to: Running lights, license plate illumination lamp, run line direct to battery, ignition switch or any 12V source on the vehicle. If you want the backup camera to turn on only when you backup then you need to connect the 12V to your vehicle reverse lights.