Changes made by Commission Directive 80/233/EEC of 21 November 1979 adapting to technical progress Council Directive 76/756/EEC on the approximation of the laws of the Member States relating to the installation of the lighting and light-signalling devices on motor vehicles and their trailers
EU Directive 1980/233
No changes made by Commission Directive 80/233/EEC of 21 November 1979 adapting to technical progress Council Directive 76/756/EEC on the approximation of the laws of the Member States relating to the installation of the lighting and light-signalling devices on motor vehicles and their trailers are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.