After a chance encounter with Adam Weissmuller, the promoter of Detroit's Arena Gardens, Light began working for Weissmuller Wrestling Enterprises. He initially worked as an usher and cashier, eventually becoming Weissmuller's protégé. After Weissmuller died in 1937, Light began working as an assistant to his successor, Louis Markowitz. Light began promoting in his own right in 1939. Following World War II, Light secured the rights to promote events at the Arena Gardens. The Harry Light Wrestling Office began staging professional wrestling shows under the banner "Big Time Wrestling". Light's were Jack Britton, a road agent, and Bert Ruby, a booker and trainer. In 1947, Light began airing Big Time Wrestling on Channel 7, giving him a major advantage over other promoters active in Detroit. In 1948, Light reported that the television product had enabled him to increase attendance while reducing advertising costs by 60%. In 1948, Light founded the National Wrestling Alliance along with Al Haft, Orville Brown, Paul George, Sam Muchnick, and Tony Stretcher. The six promoters agreed to divide the United States into regional territories within which they would not compete with one another and to recognise a single World Heavyweight Champion who would travel the country wrestling in each territory. By the 1950s, Light effectively controlled professional wrestling in Detroit and Big Time Wrestling was one of the most popular programs airing in Detroit. As part of the NWA, Light and his colleagues were responsible for coordinating the booking of midget professional wrestlers by NWA members. Their role included training rookie wrestlers and blacklisting wrestlers who failed to fulfill their commitments. In the mid-1950s, Ruby broke away from Light to found the outlaw promotion Wolverine Wrestling, weakening Light's promotion. This left Light vulnerable in an ensuing promotional war with Jim Barnett and Johnny Doyle, who began staging professional wrestling events in the Cobo Arena in opposition to Light in 1959. After a short rivalry, Light stepped away from promoting, leaving the Barnett-Doyle Corporation in control of professional wrestling in Detroit.
Personal life
Light had six children: five sons and a daughter.
Death
Light died on October 29, 1971 at the age of 73 in Detroit.