Koso LED flasher relay (KD006030).When changing your indicator lights to LED the resistance is considerably less compared to the original flashers. Without a relay, the bike canÃ¢‚¬„¢t identify whether the flashers are installed or not so they won't flash normally. Avoid this problem by using Koso's simple flasher relay! You only need one Koso LED Flasher Relay for as many as 4 LED indicator lights. Compare this to other brands on the market which require one relay per turn signal light. Red and Brown Wire Length: 3.75"Black Wire Length: 19"