GM 4-Pin HEI Electronic Ignition Control Module Wiring Connections/Diagram with the Cube-Shaped 3-Wire Inductive Proximity Sensor
This ignition system operates with full 12 volts. This is a thoroughly
tested, researched and proven reliable ignition system invented by Brian
Miller for ordinary lawn & garden engines and competition pulling engines.
With most tractors, the ignition conversion can be made with the engine in
the tractor. The only modifications that need to be done is the flywheel
shroud needs to be loosened to access and replace the Trigger Module, and
two holes will need to be drilled and tapped with the 2 supplied screws in
the kit. To install this replacement ignition system; the ignition coil mounts
in place of the Breakerless Ignition coil; the proximity cube sensor/bracket
mounts in place of the Breakerless Ignition Trigger Module, which is located
at the 10:30 position on the bearing plate; and two 9/64" holes will need
to be drilled and tapped (with the two self-threading screws are supplied
with the kit) on the backside of the bearing plate, on the left side when
facing the flywheel, to mount the GM HEI ignition control module. Be sure
to apply the supplied dielectric grease between the module and bearing plate
to dissipate the operating heat.
IMPORTANT:
The coil and/or module may burn up if the ignition switch is left on for
more than 5 minutes with the engine not
running.