To convert that Briggs to electronic ignition, all you need is the Magnetron unit from a later engine of the same cubic capacity. (It has to be from an engine with the same flywheel size, or it will not fit your engine.) Note that the Magnetron module looks the same as the coil you currently have, but if you look closely you'll see the switching device packed in between the coil and the magnetic yoke. There is a spade connector for a low-tension kill switch (as there is on the later breaker point coils) since only the very early design generation engines used the spark plug shorting system for a kill switch. If you continue to use the plug shorting facility, you just ignore the spade lug. The old coil unit has a wire coming out of the coil running to the breaker points. The Magnetron does not have that wire, so you just cut it in some convenient place so that the part of the old wire near the crankcase does not foul on anything.
