Many compact sedans and older SUVs utilize H-series headlight housings that accept HG2DC-type bulbs. As owners look to upgrade from dull, yellowish halogen light to crisp, white LED light, they often seek out HG2DC-compatible LED replacements. The physical fitment—the metal base and the alignment tabs—matches the original housing, making it a popular choice for DIY mechanics looking to improve visibility without replacing the entire headlight assembly.
It is a testament to the power of rail transit and the changing nature of work. While the days are long, the financial payoff and the quality of life on the northern end of the MARC line are undeniable.