1970: This model year's radios saw few visual changes from the previous year. There were however, many electronic changes. Thanks to advancements in technology, FM stereo equipment no longer required separate multiplex equipment--it was the first year for the one-piece stereo radio. This was also the first Chevelle year where all radios had their dial lights tied to the dash lights circuit via an extra harness connector (this meant dials only illuminate when the dash lights are on). The MISTAKES page contains helpful identification clues for 1970 equipment.