Specifications include, but are not limited to: 1.1. The green and amber LED light head assembly shall measure a minimum of 4.25” long X 0.92” wide and maximum of 5.2” wide X 1.5” high. Larger units will not be acceptable due to the size constraint of the mounting area.; 1.2. There shall be a minimum of four (4) wires exiting the unit, one for each of the following: power, ground, scan lock, and synchronize. The scan lock wire shall allow for minimum of twenty-four (24) flash patterns: twelve (12) single and twelve (12) dual.; 1.3. Operating temperature of -40 to 149 degrees Fahrenheit.; 1.4. The lens shall be manufacturers standard.; 1.5. The light and light bracket being bid shall fit in a NAPA brand grommet part #50-60700-3 or equal. Grommet shall also be provided.; 1.6. The lights being bid shall comply with FCC rules limiting interference to telecommunication networks and frequency spectrum.