The document discusses the costs of replacing a headlight assembly. It notes that driving with a non-functioning headlight is illegal and dangerous. The cost of a headlight assembly can range from $50-$300 depending on the make and model of the vehicle. Labor costs to install a new assembly are typically $100-200 per side. The document provides tips on how to save money such as purchasing parts online versus at a dealership and installing them yourself to avoid labor fees.