See more: Ignition Parts
C. Spark control wire to cylinder clamp 1938-1948 UL Big Twin , Parkerized, Colony (OEM 3393-38, 56627-38)
VL and UL Big Twin are also known as Side valve or Flathead, EL Big Twin are also known as OHV or Knucklehead, FL Big Twin mentioned below are also known as OHV or Panhead.
