Hi Jackie, those guests have a heck of a nerve showing up in the middle of this emergency! Ha,Ha.
Just to keep everything organized lets use this post for troubleshooting, when you test something just do a quote on this post and write your findings under the appropriate number.
As long as you are going to be unplugging connectors you should inspect and clean them. If you see corrosion on male/female pins clean with scotch brite, emery cloth, or something. I would also use a contact cleaner such as this
CRC CONTACT CLEANER 2000 PRECISION CLEANER 2140 CRC CHEMICALS USA on every connector you unplug even if it looks ok.
0. If you are still in a no start condition you can unplug (if you can unplug only this wire) the black yellow at the CDI and try to start, if it does start use your gas shutoff to stop engine. It will take a few minutes.
1. The black/white wire must be grounded. Break the connection at the CDI and ohm from there to the neg battery terminal.(flex wire and monitor reading)
2. The black/yellow wire must be high. To troubleshoot unplug black/yellow connector at CDI, connect test leads from harness side of wire to neg terminal of batt. With ignition on( don't start engine) you should read infinite, when off or kill switch on reading should be 0 ohms.
3. The white/blue wire must have continuity to the coil. You can ohm this.(flex wire and monitor reading) Also ohm to ground.(neg Batt).
4. The black/white wire from the coil must be grounded. You can ohm that from the coil to neg terminal of batt. (flex wire and monitor reading)
5. Forget this one for now, since they have replaced it already.
The black and the blue (pink and brown at the CDI) from the magneto need to put out voltage.
6. Forget this one for now. The black/red and green (brown and green at CDI) need to put out a pulse from the pick up.
7. Check continuity on wires between pick up to CDI and magneto and CDI(flex wire and monitor reading). Also ohm each wire to ground. (neg batt terminal). See # 5 and 6 for colors.
P.S (flex wire and monitor reading)= If reading changes then there is a problem.
Good Luck
Ken