[Thermodyne]

The jumper is just a continuation of the red wire. It carries system power from the +term of the left coil to the + term of the right coil.

Not sure what that's on, but its two dual fir coils firing independently. So it fire two, and then fires the other two at another point.

Could be a twin with dual plug heads. Or could be a 4 cylinder with single plugs per cylinder. Based on the text, its a dual plug twin. firing both plugs in the cylinder with no stagger or temp correction.

 

[Thermodyne]

Here is a couple pictures of my ignition coil. I have thecompufire ignition model number 21835 the engine is a S&S EVO 124" super sidewinder.

These are my choices besides the crane ignition
View attachment 274020

From what I see in the photos, single dual fire coil, single plug heads, figure 10 is how you would wire it.

The In figure 12, the Crain set up is just a generic single fire coil.

You prolly should consider determining what the required ohms are for coils used by that system, then odrer a single fire coil. Then Wire it like figure 12.

Also, its not mentioned, but with a 124, you'll want to be damn sure it has a working VOES on it.

 

[Thermodyne]

When I bought the bike it wasn't using the VOES the wire diagram states if not used the RPM limiter will still function or am I asking for trouble? Is your suggestion for ordering a single fire coil just in case one stops firing I'm able to still get home or is there more too it? Just to give a run down when I bought the bike it ran fine. I added an extra fuel circuit for wide open throttle due to bogging down and I decided to have the handle bars extended for comfort which was a good idea because after removing the tank i found a rats nest of wires and decided to rewire the whole bike with fuses and the only thing am not sure about is the ignition. I attached a picture of the rats nest of wire and the new dc bus I'm using now.

The VOES reduces detonation and keeps it from beating the pistons and rod bearing up. Retards the spark a little under very high engine loads. People take them off because they look like the emissions vacuum switches they saw on their old Fords.