I just sent a PM to Joe Reeves regarding electrical components on my '77 Evinrude 25. I thought I was just asking a simple question but his reply to me could help anyone with just about any motor. I wanted to know how a motor with no points gets it's spark. Apparently the charge coil sends voltage to the power pack and the sensor sends a signal to the power pack to tell it when to fire the plugs based on the timing. At least that's what I understood. Joe, I know you're gonna read this so if I explained that wrong, by all means, set us all straight. my other question was if the charge coil and sensor were just for rope start. But it seems to me these components would be necessary to the operation of the motor because the flywheel magnets flying by the coil magnets are where the whole process starts. What am I not getting?