The Rae San Hall Effect kit is an aftermarket ignition system designed to replace the entire stock ignition setup on a Honda CX500, GL500, CX650 or GL650 motorcycle. We are today looking at the CDI-replacing variant:

The ignition boxes – GY6–DC-CDI units, two of:

These are readily available online if you require replacements – , eBay UK, eBay CA, eBay AU. The electrical connections have a little rubber seal:


This little box is where you can set the ignition mapping by using a little jumper on the front. It also shows the timing via the little LEDs:

On one side there are the input wires:

On the other there’s the ground and the output wires:

…and the connectors for the two coils:

The little box in the center:


The jumper to set the different maps:

The back of the box:

The rotor, which fits on the end of the crankshaft:

It’s keyed:

On one side there will be an empty hole:

On the other there should be a glued-in magnet:

These rotate with the crankshaft and as they pass the pickups, pictured here:

…the unit knows when to fire! Also included is some mounting hardware – three bolts and two washers:

Stay tuned for the install guide and more information.