This All New wiring harness will allow your trailer (with a 4-pin trailer connector plug) to have brake lights when being towed by your SxS. *And if paired with one of our turn signal kits, this will allow the use of the turn signals on the trailer as well. Included is a dust cap over the trailer 4-pin connector. The Turn Signal option is compatible with our Turn Signal Kit and allows the Trailer to work with Turn Signals and Brake lights. VEHICLE FITMENT Polaris General (2018+) Polaris Ranger (2019+) Polaris Ranger SP 570 Polaris RZR (2018+) Polaris RZR XP Polaris RZR Pro R Polaris RZR Turbo R Can Am Maverick X3 (2018+) Can Am Commander 1000 (2022+) Can Am Defender (2019+) Polaris Xpedition Polaris Ranger XD1500 NOTES: For Rangers, lift your bed and verify you have a 4 pin or an 8 pin connector near the back middle under the tailgate/bed. Choose either the 4-pin or 8-pin selection on this page. Only compatible with RZR 8-pin connectors. Check on the drivers' side under the bed for an 8-pin connector. If you have a 4 pin connector, this is not compatible.