NorthStar 6000i Installation Manual page 13

Connecting the power wiring
The R2D unit is designed for 12/24/32-volt installations.
Power should be fed through a switch and protective fuses (or circuit breakers).
To connect the power cable:
1. Connect the red wire from the WC274 cable to V+ (12 to 32 VDC).
2. Connect the black wire from the WC274 cable to V–.
Radar power control
Electrical power for the radar's standby state is controlled by the blue and green wires in the WC274
cable. When these wires are connected to each other, the radar powers up and enters standby mode.
When they are not connected, the radar is turned off (although it still draws a tiny amount of power).
Connect the blue and green wires in any one of the following three ways:
• Option 1: Connect the blue and green wires to an S.P.S.T. switch as shown in Figure 9 to
control the radar's power An appropriate switch is included with the radar.
• Option 2: Permanently connect the blue and green wires to each other, and control the
radar's power from a switched circuit breaker at the mains circuit panel.
• Option 3: Connect the blue and green wires to a set of relay contacts controlled by the
navigator, so that the radar will turn on to standby mode automatically whenever the
navigator is turned on. Control the relay using the pink wire ("Honk" output) from the
WA215SR cable, and install a spike-suppression diode across the relay coil as shown in
Figure 10.
R2D Radar Installation Manual, Rev. A
CAUTION! Do not apply over 41.6V to the radar or it may be damaged.
Figure 9: Using a switch to control radar power
SECTION TWO: Installing and wiring the radar
Page 9