if the coil is putting out/delievering sparks to the coil wire plugged into the center cap terminal as the dist rotor/shaft turns then all that is left in the secondary current path from the center cap post to the plugs is the cap (replaced) rotor (replaced) & some if not all of the plug wires at least have continuity & these tend to be trouble free items, cap/rotor expecially & secondary voltage is intense & it takes alot to side track it (we're missing sumpin easy but I ain't seeing what it is)