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Engine turns over but no spark.   Here's a little background first.  The scooter has sat for 3 years due to health issues.  We're past those issues now so it's time to get it running again.  Even though it had stabilizer in the fuel, I pulled the fuel tank and drained the old fuel and added fresh.  I changed the spark plug, fuel filter, and air filter.  It started and ran on the center stand.  I changed engine and rear drive lube and ran it again on the center stand.  It started easily.
Then, I decided to do additional maintenance.  I replaced both tires, brake pads, changed the brake fluid, and coolant.  Replaced the battery.  Then I put all the plastics back on and now it won't start.
I lay the plug on the engine and crank it over but no spark.  I used vice grip pliers and clamped a heavy wire on the plug and grounded the other of the wire at the battery.  No spark.
I have jumpered past the rear brake switch and the side stand switch.  The fuses are good.  I have batt voltage at the red wire to voltage regulator.  I have battery voltage at the black/white wire at the coil.   I am not sure what I should have at the green wire to the coil.  The kill switch at the right grip will turn my test light off and on when checking at the coil.
Anybody have any ideas?