I Rode my 2008 R3 Classic to work last Friday Night. Got ready to go home the next morning after a 12 hour shift. Turner switch on & nothing but the horn, brake light & had single lights. Checked fuses & called wife to come & pick me up. Went home got truck & trailer went back to work & loaded up & went to Triumph Dealer Saturday morning . The service mananger said he had no idea & if i wanted to leave it jhe would get to it in two weeks. I told him I would let him know & took it to the house with me & got on line & to this site & it did not take me long to find the problem. Mine is the white wire in the connector was melted on the wiring harness side. The male plug on the switch side was black on the white wire. Got the switch working going to bypass the plug on the white wire & ordered the Eastern Beaver Kit to put on the headlights . Contacted Triumph & they checked my vin # & said there was not nothing wrong with my bike & they did not have a switch problem. I ask about the service bulletin 421 & she said it was only the Roadster not the Classic. She did say to take to dealer & let them send in a claim on it & they might pay for parts but would not say for sure. That is where I am at now. My bike has 6,900 miles on it .