The wiring diagram appears in Figure 1 on the reverse side of this page. The diagram shows a connection to channel #1, but connections to other channels are similar. 1. Connect the SH-449CSTE power terminals to a 8.5-33VDC supply that is independent of the NMEA 2000 network power supply as shown in Figure 1. Powering the unit separately from the NMEA 2000 network allows the detector to work even when the NMEA 2000 network is powered off. 2. Connect the two alarm contact terminals to a free swi