<p>COP wiring detail diagram in AutoCAD 2D drawing. Coil-On-Plug electronic ignition is referred to as COP. There are no high-voltage cables used in COP automotive ignition systems, and the coil itself is situated atop the spark plug. The coils are typically mounted on the cylinder block above the cylinder head. For more detailed knowledge and information download the 2D AutoCAD file. </p>