Do not use the frame as a ground. The BLACK wire is grounded at the coil. If you don't have a tester of some sort, here is one you can make yer cheaply, it will let you know if the coil is firing. Remove the white wire, and re-solder the BLUE wire. Don't hook up the kill switch till you get it running. Have you replaced the High Voltage plug lead?
I made this one from a LED.... Bought LED at Auto Shack.
Also check this album.