Direct Ignition

[Dave Williams]

 Typically, ignition without a distributor is referred to as
"distributorless" and uses coils and plug wires.

 When the coil is mounted directly on the spark plug it is referred to
as "direct" ignition.  SAAB gets credit for it, but Fordson tractors did
it in my grandfather's day.  Champion still lists replacements.

 Mounting the coil directly to the plug creates problems in space
management - it's often hard enough to find a place for the plug itself,
much less a coil - but it eliminates the wire, which can be damaged or
deteriorate with time, helps reduce RFI, etc.