The tail light on the motorcycle works just fine, but the brake lights don't work. Not sure where to start looking for a problem.
Check the bulb first, check fuses, thn check if theres 'live' current to the brake light wire to the bulb socket (using a tester).
If theres no 'live' current to the bulb socket thn proceed to the brake light switch and check for the 'live' current to the wires there, one of the wires there should have a 'live' current of course having the igntion switch 'on'.
If theres is 'live' current there, thn the switch is faulty it may just need cleaning, try to clean by using WD-40,if it doesn't help thn replace it.
If you still have no 'live' current on any of the wires to the brake switch thn trace the wire (color) from the rear light socket and follow to the fuse box / ignition switch.
Hope this helps!
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