A method for applying an abrasion resistant layer via a vacuum deposition technique to a plastic automotive window is provided. The plastic automotive window includes a plastic panel, an electroluminescent layer, and a weatherable layer. A first abrasion resistant sub-layer is then deposed on top of the weatherable layer, and a second abrasion resistant sub-layer is then applied onto the first abrasion resistant sub-layer. The deposition of the abrasion resistant sub-layers is carried out under controlled temperature conditions that reduce adhesion loss within the electroluminescent layer and maintains the electroluminescent functionality of that layer.