is this a chinese garbage battery? are you positive it's good? i know it's new....but is it good?
without physically viewing the bike netty real crap shoot trying to diagnose what's going on within your fuse box but keep this in mind: when any bike is in the "start and crank" mode that is the precise time of maximum drain/strain on the positive and negative cables...and also the precise time when the battery is providing the most amperage output. anything impeding that work and current flow will immediately start to smoke, overheat and traditionally give off a "burning" aroma. check your work again and particularly the left and right frame rail grounds.