- Joined
- Jan 22, 2008
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- 2,585
Everyone seems to ask for wiring diagrams and not one bike is made the same, some have flashers, some don't, some keep the points and coils and some use an electronic ignition of some kind so I had the idea to put together these diagrams. Each diagram is part of the total and could run by itself. I have used a negative ground system and most diagrams can be used with either positive or negative ground as long as there are no polarity sensitive devices such as LEDs and electronic ignition modules The colors used are not what is fitted to any bike that came from the factory, they are different just to make the diagram easier to follow. A blue wire will carry current just as well as a yellow one
First lets get the motor running:
Here is the simplest ignition possible and this was fitted to the early Commando
Later on they added a ballast resistor and used 6 volt coils
Now here is how any electronic ignition is connected, for the specific one, refer to the manufacturer's instructions. All of them have a connection to the positive and negative of the electrical system, all of them (well, OK, most) have the coils wired in series if two coils are used. A dual output coil can be susstituted for the two coils. In some cases, the pickup may have more than two wires (Sachse) and in others the whole module fits in the poinst housing (Tri-Spark). On the Tri-Spark, the pickup is part of the puck, one of the old points wires is converted to bring voltage (+ or -) the other point wire is then connected to the coils while the last connection is made through the motorcycle's frame (again + or -), this is explained in the instructions that came with the unit, as you can see even the Tri-Spark classic has the same number of wires, some are just not visible.
First lets get the motor running:
Here is the simplest ignition possible and this was fitted to the early Commando
Later on they added a ballast resistor and used 6 volt coils
Now here is how any electronic ignition is connected, for the specific one, refer to the manufacturer's instructions. All of them have a connection to the positive and negative of the electrical system, all of them (well, OK, most) have the coils wired in series if two coils are used. A dual output coil can be susstituted for the two coils. In some cases, the pickup may have more than two wires (Sachse) and in others the whole module fits in the poinst housing (Tri-Spark). On the Tri-Spark, the pickup is part of the puck, one of the old points wires is converted to bring voltage (+ or -) the other point wire is then connected to the coils while the last connection is made through the motorcycle's frame (again + or -), this is explained in the instructions that came with the unit, as you can see even the Tri-Spark classic has the same number of wires, some are just not visible.