Installation manual

610C-001 INSTALLATION MANUAL DOCUMENT No. 070906 REV. 1.2
INSIGHT INSTRUMENT CORP. BOX 122, FORT ERIE, ONTARIO, L2A 5M6
CAUTION: For upgrade installations (GEM 602/603/610 to G3); harness is grounded to the engine case, dis-
connect the ground from the engine case and connect the ground wire to the ground bus (airframe ground).
Do not connect to two ground points.
NOTE: Double check the Display ground connection before applying power. Many aircraft have terminal strips
under the instrument panel that will appear to be connected to airframe ground and will even measure to
ground with an ohmmeter. The terminal strips may instead be connected to ground terminated loads such as
landing lights or gear motors. When these loads are activated the voltage on this supposed ground will rise to
full bus voltage (14 or 28V). [Extensive damage may result from improper grounding and is not covered under
warranty.]
The LCD display dims automatically with reductions in ambient light.. The instrument automatically configures
itself for 14 or 28V dimming bus voltage. Refer to Drawing No. 1200-018.
EGT Probe Wiring
The temperature probes must be wired with the correct polarity. The EGT probes connect to the harness wires
with the yellow jacket. The probe leads and harness wires are color coded (red and yellow) to facilitate correct
polarity. Each wire is marked with the cylinder number.
Slide the wire marker down the wire so it remains with the installation for trouble-shooting. Strip the wires ac-
cording to Drawing No. 8254 and terminate with the crimp-on terminals (provided).
Verify the quality of each crimp with a “sharp” pull on the wire. The terminal should be almost impossible to pull
off when crimped correctly. Harness and probe wire colors should match as in Drawing No. 8254.
NOTE: The ring terminals may be crimped with a “service type” tool, however, AMP part number #47386 is rec
-
ommended. Be sure to test each crimp by pulling on the wire to ensure it won’t come out. The most common
installation problems are the result of poor quality termination.
Installing Fuel Flow Sensor
Aircraft without existing FF sensors should have one Insight supplied sensor installed per engine. Existing
compatible FF sensors may be connected directly to the G3.
Install new sensors in accordance with Insight Drawing #610C-315. Refer to AC 43.13-1B, Chapter 8 Section
2, 8-30, 8-31, 8-37, 8-38.
Fuel flow case must be connected to airframe ground.
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