Installation Instructions
GTN 6XX/7XX AML STC Installation Manual 190-01007-A3
Page E-9 Rev. 4
ALL WIRES 24 AWG OR LARGER UNLESS OTHERWISE SPECIFIED.
GROUND DESIGNATIONS: SHIELD BLOCK GROUND AIRFRAME GROUND
VERIFY AIRCRAFT GROUND MEETS BONDING REQUIREMENTS IN SECTION 2.4.5.
ALL POWER LEADS AND GROUND LEADS ARE REQUIRED. 22 AWG WIRE CAN BE USED FOR THE SPLICE.
USE APPROPRIATE HEAT-SHRINK TUBING TO PROVIDE SUFFICIENT INSULATION FROM SURROUNDING
CONTACTS.
CONFIGURATION MODULE IS MOUNTED IN THE BACKSHELL OF THE P1001 CONNECTOR.
CONFIGURATION MODULE HARNESS USES 28 AWG WIRES. CONTACTS SUPPLIED WITH CONFIGURATION
MODULE MUST BE USED FOR CONNECTING CONFIGURATION MODULE HARNESS TO P1001.
OPTIONAL CONNECTION. LIGHTING CAN BE CONTROLLED BY THE INTEGRATED PHOTOCELL, A SINGLE
LIGHTING BUS, OR DUAL LIGHTING BUSES. IF THE AIRCRAFT HAS A SINGLE LIGHTING BUS, ONLY LIGHTING
BUS 1 NEEDS TO BE WIRED. REFER TO SECTION 5.5.1.6 FOR CONFIGURATION DETAILS.
CIRCUIT BREAKER SHOULD BE LABELED AS “COM”, “COM1”, OR “COM2” DIRECTLY ADJACENT TO THE
CIRCUIT BREAKER. THE CIRCUIT BREAKER MUST BE READILY ACCESSIBLE TO THE PILOT. ALTERNATE
SPELLINGS OF “COM” ARE ACCEPTABLE (E.G., “COMM”)
CIRCUIT BREAKER SHOULD BE LABELED AS: “GPS”, “GPS1”, OR “GPS 2” FOR THE GTN 625/635/725, AND
“NAV/GPS”, “NAV/GPS1”, OR “NAV/GPS2” FOR THE GTN 650/750, DIRECTLY ADJACENT TO THE CIRCUIT
BREAKER. THE CIRCUIT BREAKER MUST BE READILY ACCESSIBLE TO THE PILOT.
IF MODIFICATION OF THE HARNESS FROM THE FAN TO THE P1001 CONNECTOR IS NECESSARY, THE
MODIFIED LENGTH MUST NOT BE LONGER THAN 8 INCHES. THE FAN HARNESS PART NUMBER IS 320-00600-
00, AND IS SUPPLIED AS PART OF THE GTN 6XX OR 7XX CONNECTOR KIT.
FAN SUPPLIED AS PART OF BACKPLATE ASSEMBLY.
REFER TO SECTION 2.7 FOR SPECIFIC INSTRUCTIONS ON POWER DISTRIBUTION TO THE GTN FOR SINGLE
AND DUAL INSTALLATIONS.
GTN 650 AND GTN 750 ONLY
GTN 635, GTN 650, AND GTN 750 ONLY
THE GTN 625 AND GTN 725 ONLY REQUIRE A 5 AMP C/B
TVS PROTECTION IS ONLY REQUIRED ON ONE GTN IN A DUAL NAV/COM, NON-METAL AIRCRAFT
INSTALLATION. FOR VFR-ONLY INSTALLATIONS, WIRE AS SHOWN ON SHEET 1. REFER TO SECTION 2.3.2.4
FOR PART NUMBERS. REFER TO SECTION 3.6.5 FOR ASSEMBLY INSTRUCTIONS.
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NOTES:
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Figure E-4. GTN Power Lighting Configuration Interconnect
Sheet 3 of 3