The Kuryakyn 4709 Diode kit is required when installing L.E.D. lights as turn signals on a motorcycle with a single turn signal indicator light on your dash. If not installed, power will back-feed across the indicator light and all turn signals will flash at once. Includes (1) Diode wire assembly and (1) 6" ground wire - black; suggested tools for installation (not included): wire stripper/cutter, soldering iron, solder, heat shrink. The Kuryakyn 4709 Diode kit is compatible with models containting a signal turn indicator bulb on dash; recommended for use when incandescent signal bulbs are replaced with LED signals.