02-02-2020, 01:55 PM
On many ‘70’s Japanese four-cylinder bikes, there were two sets of points, each driven off the crankshaft and each timed to open 360 degrees apart. Basically, that was the “distributor.” Each set of points allowed voltage to be sent to one of two different coils, each coil sending voltage to the spark plugs in two different cylinders (one on the compression stroke and the other on the exhaust stroke, thus a “wasted spark.”) Or something like that.