A vehicular window assembly includes a window panel having an inner surface and an outer surface, electrically conductive traces established at the inner surface of the window panel, a pair of busbars established at the inner surface and in electrical connection with respective portions of the electrically conductive traces, and an electrical connector affixed at each busbar and configured to electrically connect to a wire harness of a vehicle when the vehicular window assembly is installed at the vehicle. The electrical connector includes a bonding portion, a connecting terminal and a busbar-connecting portion. The connecting terminal is configured to electrically connect to the wire harness of the vehicle. The bonding portion is adhesively bonded at the window panel. The electrical connector is bonded at the window panel with the busbar-connecting portion electrically connected to the respective busbar without use of solder.