J.P. Instruments EDM 960 Twin Primary Installation Manual - Manual (Page 11)

FAA Approved Installation Manual for the EDM-960 system Report No 909
Primary Engine Data Management System Page 11 of 46 Rev D
Date 2-6-2014
12. Wiring harness for 950
Five connectors are protruding from each of the two EDM-950 DAU’s, one for each engine. Connect the five wiring
harnesses to the rear of the 950 DAU mounted on the cold side of the firewall and run the cables through the firewall
into the engine compartment. Allow sufficient service loop to facilitate removal of the connectors for servicing. These
wiring harnesses are labeled as follows:
EDM-950
DAU
Harness PN
P1 790200 Oil temperature, Induction temperature, Carburetor temperature, Outside air
temperature, Turbine inlet temperature, Turbine inlet temperature 2, Engine ground.
P2 700700
700702 CHT, EGT 6 cylinder 10 feet
CHT, EGT 4 cylinder 10 feet
P3 790422 RPM, MAP, Oil pressure
P4 700708 Fuel flow transducers FX-201, GPS
P5 790723 Fuel pressure , amperes, Voltage, and fuel level.
P6 790827 Part of fuel qty sensor interface. Connects with J6 and P5
P7 790811 FQ, interface to Fuel tank.
P8 790807 Power for, GPS , Aux Light to display on cockpit display
Route the wires from the connectors through the firewall using fireproof rubber grommets and flame retarding silicone.
Use an existing hole if possible. All wires must be routed away from high temperature areas (exhaust stacks,
turbochargers, etc.). Secure probe and sensor leads to a convenient location on the engine approximately 8 to 12
inches from the probe or sensor, being sure there is sufficient slack to absorb engine torque. It is essential in routing
the probe wire that this wire not be allowed to touch metal parts of the air-frame or engine since abrasion will destroy
this high temperature wire. Secure wires along the route to the indicator. Secure wire using original clamps, tape or tie
wrap if possible.
13. Wiring harness for Display
EDM-930 Display Harness PN Description
LEFT/FRONT RAD 790749 Category 5 jack and cable for RAD Right engine
RIGHT/REAR RAD 790749 Category 5 jack and cable for RAD Left engine
P8 790807 25 pin D-Sub - GPS RS232, GND, Aux Tank Intfc.
LEFT/FRONT ENGINE (P9) 790808 Canon Plug (Installer wired) - Power, RS232 MFD data
RIGHT/REAR ENGINE (P10) 790808 Canon Plug (Installer wired) - Power, RS232 MFD data
P9/P10 174203 Connector Lft/Rt Data (field installed to P11)
P11 790808 Power DAU, Data for DAU
P12 790810 Optional—Aux Light interface cable to J12 on P8
CAUTION: Be sure any wiring does not obstruct the control movement under the instrument panel.
The probe wires must not be tied in with ignition, alternator or engine cabin heater ignition wires because of potential
interference with readings.
The temperature probe wiring harness is made of Chromel-Alumel alloy wires that must not be substituted or extended
with copper wire. The power and ground wire are normal copper. Temperature probe leads may be spliced with
additional Chromel-Alumel wire using copper butt splices.