Show Me Christmas Lights Installation Jefferson City designs, installs, maintains, takes down and stores professional Christmas light displays for homes and businesses in Jefferson City and the surrounding Cole and Callaway counties, including Holts Summit, Wardsville, St. Martins and Fulton. We supply commercial-grade lights, hang rooflines, trees and entryways, fix any strand that goes out during the season, and take everything down in January so you never climb a ladder. One call covers the whole season.