Hose connection system for narially sensitive diagnostic devices. A reflector is employed to maximize reflection of light emanating from the LED and a lens having an anti-reflective coating thereon associated with the LED opposite the reflector to enhance the light output and magnify the narrow beam of the LED. A lighting circuit and a bayonet cap are provided at the base part. The communication module is configured to transmit the advertising data to one or more display computers. As a result, the lock is inexpensive to make, easy to use, and unlikely to become inoperative because of lost or broken parts or due to fines or other difficulties encountered in harsh digging environments. This invention further relates to methods for producing maize varieties derived from maize variety X7H283.