1 Lamp DR Wiring Harness & Switch KitUniversal Wiring Harness and Switch kit, (for 1 Lamp- DT connector), Universal Plug and Play Wiring Harness, with On-Off Rocker Switch, 12V DC Relay, 30A Fuse, With 2-pin DT connector for 1 Lamp only, With Waterproof Fuse Holder, Set includes Wiring Harness and Switch, Easy Installation, Use with one Heise Light Bar or Cube 22 inches or, smaller.Features: Universal Wiring Harness & Switch kit (for 1 Lamp, DT connector) Universal Plug and Play Wiring Harness with On/Off Rocker Switch 12V DC Relay 30A Fuse With 2-pin DT connectors for 2 Lamps With Waterproof Fuse Holder Set includes Wiring Harness & Switch Easy Installation Use with one Heise light bar 22 inches or smaller or any cube WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.