If you have LED then a full headlight relay system is not necessary from the performance aspect - the LEDs operate at low voltage anyway & the supply is already regulated by the module, so you don't need the voltage enhancement the relay kit provides However the key-switch reliability issue remains, although lesser current for the leds But for a late model Roadster there is already a bypass relay; & for earlier Roadsters or stds/classics it is simple single relay install, using essentially the same scheme the OEM late roaster employs