A mount plate includes a mount plate housing for coupling an audiovisual device with a battery. A power terminal in the mount plate housing provides electrical power to the audiovisual device. A hot wire connected with the power terminal extends from the mount plate housing. The hot wire is configured to connect with a corresponding hot wire of the audiovisual device. A ground wire extending from the mount plate housing is configured to be connected with a corresponding ground wire of the audiovisual device. A first insulation piercing interconnect is connected with the hot wire. The first insulation piercing interconnect is configured to connect the hot wire with the corresponding hot wire of the audiovisual device. A second insulation piercing interconnect is connected with the ground wire. The second insulation piercing interconnect is configured to connect the ground wire with the corresponding ground wire of the audiovisual device.