Electronics International CGR-30P - Manual (Page 40)

3.9 Connect the EDC Harness to the EI P-300M Magnetic Fuel Level Senders:
Route the appropriate fuel level wires (for the number of tanks to be monitored) in the EDC harnesses to the
P-300M magnetic fuel level senders. Cut the wires to length, install the appropriate conntectors and connect to
the P-300M fuel level sender.
3 1
3.10 Connect the EDC Harness (Volts Measurement Pin) to the Bus:
Pin 35 of the EDC top connector monitors bus voltage. Connect this pin to the bus to be monitored.
3.11 Connect the EDC Harness to the RPM Signals:
If the EDC RPM Ch 1 and Ch 2 Inputs are to be connected to a Magneto, Ignition Coil
or CDI Ignition System, connect the Ring Terminal Isolators (found in the RPM Isolator
packet) to the P-leads on the back of the Mag Switch. Connect the EDC RPM Ch 1 and
Ch 2 wires (White/Brown and White/Orange) to the RPM Isolators.
If the EDC RPM Ch 1 and Ch 2 Inputs are to be connected to an electronic ignition
system, connect the EDC RPM Ch 1 and Ch 2 wires (White/Brown and White/Orange)
directly to the electronic ignition system RPM output (do not use any isolators). With-
out isolators the EDC RPM Ch 1 and Ch 2 Inputs have a 3-volt trigger level and will
accommodate 0 to 5-volt, 0 to 12-volt or 0 to 24-volt signals. If only one RPM signal is
available, connect only one of the EDC RPM channels.
WARANING: Connecting an EDC RPM input directly to a magneto without an Isolator
will damage the EDC. Be sure there is an Isolator in each RPM input lead connected to a magneto, ignition coil or
CDI ignition.
3.12 Set up the EDC for a 4 or 6-Cylinder Engine:
If the EDC-33P is to be used on a 6-cylinder engine, strap pin 28 to Pin 27 on the EDC Bottom Connector.
Leave these pins open for a 4-cylinder engine. This strap may already be installed or can be found in the kit.
3.13 Connect the EDC Harness to the VI-221's (Voltage Interface Units):
Route the appropriate EDC wire to the VI-221’s that were used to interface the Gear Position Lights, Unsafe
Light, Flap Position, Trim Position and/or any indicator to the EDC.
To P-lead
EDC
RPM Input
(1 of 2)
Ring
Terminal
Isolator
(1 of 2)
Bottom Connector
EDC
Temp or Resistive Fuel
Level Channel.
VI-221
Fuel Tank
1
+5V (Red)
Gnd (Black)
Rin (White) EDC
Resistive Input
(1 of 4)
Bottom Connector P-300M
Fuel Level Sensor
.
.
Fuel Tank 4