I used the electrical diagram from the full service manual. The LED's in the handguards are 2-wire, the bike is 3-wire. Ground, DRL (daytime running light - always on when bike key is turned on) and direction indicator (flashing). If you just connect the two wires, you need ground + either the DRL wire OR the direction indicator wire. I wanted both so I bought a 2 to 3 wire kit. LED handguards on the 2-wire side, bike on the 3-wire side. This way they copy/ mimic the bike lights - always on as DRL, and off/on when turning. I have the SW Motech Kobra handguards and LED inserts. I also used Posi-Tap to make the connections. Easy and secure. I would recommend checking your connections, but it is odd that they work but continue to work even after the key is removed! Was the bike light also still flashing?
Daytime running Lights