Option #2 - A-1 Miller's Custom-Made Reliable and Maintenance-Free 12 Volt Electronic Ignition Conversion Kit

Option #2 - A-1 Miller's Custom-Made Reliable and Maintenance-Free 12 Volt Electronic Ignition Conversion Kit that is Triggered Off the Ring Gear of a 9" Flywheel with the Narrow, Tapered Edge (most common type of flywheel) to convert from points and condenser ignition to electronic ignition for Kohler Engine Models K241, K301, K321, K341 and K361. [Top of Page]

List of Parts in Kit Includes:

New high output cube-shape 3-wire inductive proximity sensor w/mounting adapter and two Allen head mounting screws w/lock washers.
New high quality GM 4-pin HEI electronic ignition control module with two 8-32 UNC x 5/16" hex head self-threading screws (not self-tapping) and two flat washers (to create an air space for cooling of unit) or packet of thermal paste.
6-32 UNC x 3/4" length Allen head screw with aluminum spacer and split lock washer.
One 3/16" and three 1/4" slip-on crimp wire connectors (for module), three 3/16" ring crimp wire connectors (for ignition coil and ground W terminal on module), and two nylon wire clamps (loops) to secure wires in place.
New 12 volt canister ignition coil w/mounting bracket/clamp.
New 10" or 13" length metal core spark plug wire. IMPORTANT - Due to length of spark plug wire, please indicate if original Breakerless coil is mounted next to carburetor (10" length) or above starter motor (13" length).
New Autolite 216 or Champion 844 (H10C) spark plug. Set spark plug gap at .035" with this system.

Installation Instructions: Click/tap here to print out the wiring diagram and installation/wiring connection instructions.

Fasten the cube-shape proximity sensor on the two bosses that's on the bearing plate with the supplied Allen head screws and split lock washers. If there are no threaded holes in the bosses, drill with a 5/32" bit, and cut 10-24 UNC threads in the bosses. Route the insulated wires on the sensor through the hole in the bearing plate. Click/tap here to learn how to professionally cut new threads.
With the proximity sensor installed on the bearing plate, and the (20º BTDC) S mark on the flywheel aligned with the raised boss on the bearing plate, install the supplied 6-32 UNC x 3/4" Allen screw, spacer and split lock washer in the gear ring at 1/16" - 1/8" from the proximity sensor, centered with the sensor. FYI: The inner circumference of the ring gear is mild steel, and the gear teeth is hardened steel. Click/tap here to learn how to professionally cut new threads.
Mounting of HEI module requires two 9/64" drilled holes. To install module behind bearing plate, use a close quarters power drill or use an ordinary 3/8" power drill with a custom-made 7" length x 3/8" diameter drill bit extension with a 9/64" drilled end hole and two Allen set screws to secure the 9/64" drill bit. (As shown to the right ->.) If engine is equipped with a mechanical fuel pump, it will need to be removed for installation of the module, then reinstalled afterwards.
Use the two supplied 8-32 UNC x 5/16" hex head self-threading screws to fasten HEI module with two flat washers between the module and mounting surface to create an air gap to cool the unit, or use dielectric grease between the module and backside of bearing plate or an aluminum plate with cool circulating air to dissipate the operating heat. Mounting holes in module body must be grounded to engine/chassis ground (battery negative (–) post).
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 kill switch is used, connect the ungrounded wire from the kill switch 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 generator.
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, which connects to the battery positive (+) post.
The cube-shape proximity sensor has a built-in LED (Light Emitting Diode). If the proximity sensor is wired correctly, the LED will illuminate when in close proximity to the detectable target.

Complete Ignition Kit listed above without any switches. (Customer supplies own switches.) $180.00 per kit, plus shipping & handling.
Complete Ignition Kit listed above with OFF-ON ignition toggle switch and momentary push button starter switch. $198.00 per kit, plus shipping & handling.
Complete Ignition Kit listed above with OFF-ON pull-push ignition switch and momentary push button starter switch. $198.00 per kit, plus shipping & handling.
Complete Ignition Kit listed above with OFF-ON-START battery type key ignition/starter switch. $198.00 per kit, plus shipping & handling.
Complete Ignition Kit listed above with OFF-ON ignition key switch (for security) and momentary push button starter switch. $301.00 per kit, plus shipping & handling.
Please let me know which kit you need and I'll give you the total amount with shipping and payment options.$175.00 each kit, plus shipping & handling. (Updated 5/20/23) [Top of Page]