All you need to do is just remove the unit. The wires that go to it just should be covered and that's it. A two prong standard auto flasher can be used it your old one is bad as long as you have oem signals. Make sure the bike is running or you have 12.5+ volts in the battery for oem flashers to work. The older 77-80 can style flasher relays need 13+ volts to flash.