3.6 Connect the RFLM-4-x Harness to the EDC Connector and to the Resistive Fuel
Level Sensors:
Route the appropriate resistive fuel level input wires (for the number of tanks to be monitored) in the RFLM-4-x
harness to the EDC Bottom Connector. Plug the wires into the appropriate resistive fuel level channels. The excessive
wire can be cut and spliced, bundled and tie wrapped up or cut to length and new D-Sub pin installed (see the
“Working with Connectors” section of this manual for more information). Route and connect the corresponding wires
in the RFLM-4-x wire harness to the appropriate fuel tank sensors. Route the red wire (in pin 1 of the RFLM-4-x
connector) to the aircraft bus via the MVP/EDC 5-amp circuit breaker.
3.7 Connect the EDC Harness to the Capacitive Fuel Level Probes:
Route the appropriate capacitive fuel level wires (for the number of tanks to be monitored) in the EDC harnesses to
the capacitive fuel level probes. Cut the wires to length, install the appropriate connectors (see the “Working with
Connectors” section of this manual for more information) and connect to the capacitive fuel level probe.
Note: The capacitive fuel level channels are shared with the resistive channels. A single capacitive and resistive
channel cannot be used simultaneously
Ch 1 Rin, Pin 6 (Brown)
Ch 2 Rin, Pin 7 (Orange)
Ch 3 Rin, Pin 8 (Yellow)
Ch 4 Rin, Pin 9 (Green)
+Vin, Pin 1, (Red)
To Bus (via MVP/EDC Circuit Breaker)
RFLM-4-12V (for a 12Volt system)
RFLM-4-24V (for a 24Volt system)
Fuel Tank
1
Fuel Tank
2
Fuel Tank
3
Fuel Tank
4
EDC
Resistive Input
(1 of 4)
Bottom Connector
Connect only the wires for
which you have Fuel Tanks.
Ch 1 Rin, Pin 2 (Brown)
Ch 2 Rin, Pin 3 (Orange)
Ch 3 Rin, Pin 4 (Yellow)
Ch 4 Rin, Pin 5 (Green)
EDC
Resistive Input
(1 of 4)
Bottom Connector
P-300C Capacitive
Fuel Level Probe
Cin (White)
+5V (Red)
Gnd (Black)
27
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