The Ancor NMEA 2000 Tee Connector offer connection between NMEA 2000 drop cables and backbone cables. The yellow couplers connect to the corresponding Ancor tees and backbone cables, creating a simplified, color-coded network installation. NMEA 2000-approved engineering delivers 100% universal compatibility with other manufacturers' products. Color-coded Easy installation and identification NMEA 2000-approved: 100% universal