GM 4-Pin HEI Electronic Ignition Control Module Wiring
Connections/Diagram with the Cube-Shaped 3-Wire Inductive Proximity
This ignition system operates
with full 12 volts. UPDATED 8/8/17: In order for the ordinary/stock GM 4-pin
HEI module allow the engine to accelerate at full speed, it must be used
with the Cube-shaped 3-wire inductive proximity sensor, and can be
used with virtually any ignition coil, regardless of the ohms resistance
or voltage output, even with a suppression/carbon-core with a 4.8 ohm resistance
spark plug wire and resistor spark plug gapped at .035". This concept
revolutionizes the use of this small, compact and versatile module! This
is a thoroughly tested, researched and proven reliable ignition system invented
by Brian Miller for ordinary lawn & garden engines and competition pulling
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.
Connect the Black wire
on the sensor to the [G] terminal on the module.
Connect the Blue wire on the sensor to
the [W] terminal on the module and to engine/chassis ground (battery
negative () post). NOTE: The [W] terminal on the module does
not need to be connected to anything, but the blue wire on the proximity
sensor must be grounded.
Connect the ignition coil negative () terminal to the [C] terminal
on the module. For competition pulling - if the grounding-type killswitch
is used, connect the ungrounded wire from the killswitch to this terminal.
Or for a generator engine, connect this terminal with a semiconductor rectifier
diode to "excite" or temporarily energize the field windings in the
Connect the Brown wire on the sensor
to the [B] terminal on the module, and to the ignition coil positive
(+) terminal and to the ignition switch (battery positive (+) post).
Mounting holes in the module body must be grounded to engine/chassis ground
(battery negative () post). When mounting the GM 4-pin HEI module,
always fasten it with
dielectric, thermal or heat sink grease/paste on a clean,
flat aluminum plate with plenty of fresh air circulation to dissipate the
heat while in operation. (The module does NOT have a built-in timing retard.)
The cube-shaped proximity sensor has an LED (Light Emitting Diode) on the
unit. If the proximity sensor is wired correctly, the LED will illuminate
when in close proximity to the detectable target.
Compliments of Brian Miller