Filter
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IMPORTANT
Always install the Fuel Flow Transducer AFTER the primary filter. The primary filter must be
a good quality water separator type with a minimum filtration of 30 microns or better. (10 or
2
micron. The lower the micron rating the finer the filtration) Failure to provide this level of
filtration protection will result in inaccurate readings or total failure or damage to the t
ransducer.
If there is not a suitable length of hose after the primary filter, an in-line filter (30 micron or
better) should be fitted before the Fuel Flow transducer. Damage due to insufficient filtration
is not covered by warranty. If in doubt please consult your local
Marine dealer for advice
prior to installation.
Fuel Flow
Signal (White)
Fuel Flow DC
output positive (Black)
Common
Shield
Black Heat shrink
tubing on shield
Installation of the fuel flow transducer
Installation Guide for the fuel flow transducer
The fuel flow transducer is designed for
installation in Coast Guard approved
3
/
8
“
flexible fuel line. The transducer MUST be
installed AFTER the main fuel
filter. It should
be located well away from any area where it
will be effected by excessive heat or vibration
from the engine. It is preferable to mount the
transducer in a vertical position.
Drain all the fuel from the
flexible fuel line. Cut
the fuel line and using the fuel hose attaching
clips provided install the transducer so that the
FUEL IN side of the transducer connects to
the fuel tank.
Wiring Connection
Keep electrical and transducer cables
away from alternator or other noise
generating electrical cables.
From Tank
Page 5
(Sensor Ground)
(Sensor Ground)
(Sensor Signal)
(Sensor Signal
(Fuel Tank Level)
Harness HN0355/HN372
Large Connector
Air/Water Temp.
Shrink Tubing
or Wrap
Water
Temp.
Sensor
signal
White
Blac
k
White
Blac
k
Blac
k
Black
Red
White
Pink
HN0355 - 4 inch Commanders
Pin A Red Air Temperature
Pin B Black Ground
Pin C White Water
Temperature
Pin D Pink Fuel
Tank Sensor
Pin E Plug Not Used
Pin F Plug Not Used
Air Temp.
Sensor
signal
ECR 1903 12/21/01
HN0372 - 5 inch Commanders
Page 13
2x
PJ0005
Same as above- Add the following