The main return for the negative battery terminal is under the seat.
But you should check your negative battery terminal first to make sure the connection there is tight and not corroded. Check the positive battery terminal too.
velociraptor intake; Cannella black riser; dyno tuned; black & white spikes
Cobra 3" slips (baffles in); Memphis Shades pop top sportshield; iso-driver boards
Fi2000R, ~120 mls LED lights; C&C SportTour seat; Rebel Bandit ReFlash Hog