The Whelen WeCanX Vehicle-to-Vehicle Sync system automatically synchronizes lights and tones across multiple vehicles. For optimal performance, it is recommended to mount the module on the vehicle's dashboard or rear deck, though it can be installed on any flat surface or window. When mounting to a window, 3M SJ3560 Dual Lock tape is advised. The module must be positioned face-up, with the side displaying the logo oriented outward, as this side receives the signal. If mounted to a window, ensure the logo side faces outside the vehicle.