SV-EMS-220/221 Installation and Configuration
SkyView System Installation Guide - Revision AA 7-69
Crimp a standard ¼” female Faston onto one of the grounds coming from the SV-EMS-
220/221’s EMS 37-pin Main Sensor Harness. Crimp another ¼” female Faston onto the wire that
corresponds to the desired general purpose input. Push the two Fastons onto the two terminals
on the fuel pressure sensor. Polarity is not important.
Note: If you are converting a Dynon Avionics D10/D100 product installation to a SkyView
installation, you should remove any resistor that is connected to the existing coolant pressure
sensor. It is not needed when used with SkyView.
Coolant Temperature Sensor
The coolant temperature sensor may be connected to any of Pins 4, 6, 7, 8, 9, 10, 11, 12, 20, 21,
22, 23, or 31 on the SV-EMS-220/221.
The coolant temperature sensor needs to be installed according to the directions of your
engine’s manufacturer. Dynon Avionics sells temperature sensors with both 5/8-18 UNF (Dynon
Avionics P/N 100409-001) and 1/8-27 NPT (Dynon Avionics P/N 100409-000) threads; these are
the same as those used by the oil temperature inputs. If neither of these threads matches those
in your coolant line, you will need to use adapters or drill/tap your own. Using a crush washer
between the sensor and the mating line, screw the sensor into the fitting. Do not over tighten.
Route the wire from the desired general purpose input pin on the SV-EMS-220/221’s EMS 37-
pin Main Sensor Harness to where the coolant temperature sensor is mounted. When routing
the wires, make sure that they are secured, so they will not shift position due to vibration. Strip
¼” of insulation off the end of the wire. Crimp a #10 ring terminal onto the end of the wire.
Ensure that a good connection is made between the wire and the connector. Unscrew the nut
from the stud on the coolant temperature sensor. Slip the ring terminal onto the stud and
secure the nut over it.
Note: If you are converting a Dynon Avionics D10/D100 product installation to a SkyView
installation, you should remove any resistor that is connected to the existing coolant pressure
sensor. It is not needed when used with SkyView.
Rotax Pre-installed Coolant Temperature Sensor: Wire the coolant temperature sensor in the
same way as shown above for the Dynon Avionics-supplied sensor.
General Purpose Temperature Sensor
Any temperature sensor provided by Dynon Avionics may be utilized as a general purpose
temperature sensor on any of Pins 4, 6, 7, 8, 9, 10, 11, 12, 20, 21, 22, 23, or 31 on the SV-EMS-
220/221.
For example, you may connect an SV-OAT-340 sensor and configure it as a general purpose
thermometer (e.g., for cabin temperature). Connect one of the wires to the input pin, and the
other wire to any available EMS Ground, any of Pins 3, 5, 13, 16, 17, or 30.
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