Delco Electronics Corporation was the automotive electronics design and manufacturing subsidiary of General Motors based in Kokomo, Indiana. The name Delco came from the Dayton Engineering Laboratories Co., founded in Dayton, Ohio by Charles Kettering and Edward A. Deeds. The "AC" often seen in front of the name are the initials of Albert Champion, a pioneer in the development of the spark plug. He made the change during his tenure at General Motors, after they took over Delco.