It's the sealed small black ignition module that resides under the seat. It sends the "spark" at TDC (Top Dead Centre) on the power stroke of the piston, to the coil, the coil in turn increases the voltage WAY UP (read 30,000v +), the current passes from the coil through the ignition wire where it jumps across the gap on your spark plug.
It's a sealed unit, maintenance free, and it either works or it doesn't.
Likely costs $ 15.00 to manufacture, $ 10.00 to package, inventory, and run it through the distribution network, and with MARK-UP sells out for $ 500.00
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" No.....your other left" (Memories to when I was a Motorcycle Instructor)
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