Ok, using this diagram. http://www.mopedarmy.com/mediawiki/images/d/d9/1980_A3_wiring_colored.JPG
Do you mean the brown wire should not be grounded or the black wire? The black wire goes from the magneto and grounds to the coil, then feeds out to the kill switch. From what I can tell they both look like grounds to me actually...so basically, what do I do again?