Mercury - 5-Pin NMEA 2000 / CAN H Extension Harness 9 m 84-879171T10. OverviewSome installs just need a longer run, especially on boats with wide consoles or long rigging tunnels. The Mercury 84-879171T10 Extension Harness gives you nine full meters to work with, which makes it a lot easier to place a GPS antenna or IMU where it actually belongs-out of the clutter and in a spot where it does its job. It's the kind of cable you reach for when everything is routed neatly, but the last piece still