Hi all, it's my first post! I have a vespa LX50. The brake lights aren't working but the tail light is. I've tried three different bulbs so it's not that. I've also replaced both brake switches, both are working fine to start the scooter so it's not that either. I've checked all connections and they seem clean and corrosion free, any ideas? I'm brand new to scooters and driving in generally so my mechanical experience is almost nonexistent!