Hi Folks,
            Firstly thanks for allowing me access , much appreciated. I am in the process of constructing a minimal wiring loom for a Savage engine ,sorry , I don't know the year, it's mounted in a vintage Ariel frame .I could do with knowing what the black wire on the ignitor does , it looks like it goes to the starter solenoid and is energized when the starter button is pressed. It appears to put out around 5 volts output when the box is powered up. I don't have sparks at the moment but I don't want to connect this wire up until I know what it does. Pick up coil has around 500 ohms resistance and I can get the plug to spark by switching power to the box off so I know the high tension side is good. Thanks in advance , David.

Thanks for the rapid reply, the link to engine numbers is a great help, unfortunately the wiring diagram links don't appear to work however I do have a Clymer manual so that's not really an issue. What I really need to know is the function the black wire performs as opposed to where it goes. Once again my sincere thanks for your time. David.

Thanks , black/white is earth on Suzukis , from memory the black/yellow feeds the pick up , it's the plain black going to the starter solenoid that has me confused. but as I say thanks for your input. David.