Owner’s Manual
MD150 User Manual
Page 6
4.3 Wiring Connection
Note: An external switch is necessary to turn
the unit on and off.
Figure 2. Instrument dimensions
Figure 3. Wiring Connections
SIA51
or
SIA53
Pin 1 - Brown Sheild
Pin 2 - Green
Pin 3 - Red
Pin 4 - White
•
Keep electrical and transducer cables away
from alternator or other noise generating
electrical cables. Avoid connecting the
instrument to power circuits that share loads
with ignition, alternators, inverters and radio
transmitters. Electrical power supply
connections should always be as short as
possible.
•
Connect the red wire to the positive supply
via a 1 amp fuse or a 1 amp circuit breaker.
Connect the black wire to the electrical
ground. A 1 amp fuse will provide protection
for up to five 100 series instruments.
•
Connect the 4 pin Fuji connector to the speed
and temperature transducer cable connector.
Extension cables are available if the
transducer cable is too short.
•
If you are not using a repeater of you do not
intend to provide NMEA data to another
instrument then insulate the bare end of the
blue wire.
External Buzzer
Green
2.2" (56mm)
1.75"
(45mm)
4.4" (1
12mm)
1" (24mm)
1.4" (35mm)
1.2"
(30mm)
4.4" (112mm)
Blue
Black
Red
1A Fuse
+12 VDC
Ground
NMEA output to repeater
Phono
Plug &
Socket
Fuji
Plug &
Socket
Speed
Depth
Transducers
