an illuminated electrical transformer / power supply assembly utilizing an illuminating module assembly comprising electrical light source , controlling means and remote electrical power source , contained within or upon electrical transformer or power supply housing . the illuminated electrical transformer or power supply is designed for the purpose of illumination while attaching the electrical transformer or power source to an electrical receptacle . the electrical light source is positioned to illuminate an electrical receptacle to provide a lighted and clear view , enabling user to safely , accurately and conveniently connect the electrical transformer or power supply to the electrical receptacle .