Easily install any Kuryakyn by Kellermann or other custom L.E.D. turn signals with the Rear Signal Splitter Module available in two versions (3-wire 510-2175 or 4-wire 510-2175) to accommodate any custom turn signal application.; Plug-and-play application Allows stock taillight and turn signals to remain in place with stock functionality or be removed for custom applications 3-wire provides: run power, brake/turn power and ground Left and right outputs provide run and brake/turn functionality Can be used as a complete plug-and-play upgrade to Kuryakyn Rear Fender Stirp Lights 804-202 or 400-2649