do your headlights get brighter and dimmer with engine revs ? mine did and it burned up my blinker relay , yours might not be connected to your bar switch at all , my bike took about 3-4 months to burn the blinker out but it did (bad voltage regulator)


sprocket pretty simple , remove from bike (hardest part - remove snap ring retainer clip) remove 4 bolts , install in reverse order
BUT you do have to pay attention to the spacers on each side of wheel when uninstalling and reinstall on the proper side , and your brake caliper (wires tend to break)