Garmin GTX 327 Installation Manual

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Page 12 GTX 327 Installation ManualRev J 190-00187-022.6 ELECTRICAL CONNECTIONSAll electrical connections, except for the antenna, are made through a single, 25-pin D subminiatureconnector. Table 2-4 defines the electrical characteristics of all input and output signals and identifies thecable requirements for each signal. Required connector and associated hardware are supplied with theMounting Rack, Backplate and Connector kit (Garmin P/N 010-10161-01). See figures B4 and B5 onpages 43 and 45 for interconnect wiring diagrams.Larger pins are supplied for the connector to provide power and ground at pins 13, 14, 15, and 25 whenrequired. Refer to figure B4, Note 1.Table 2-2. Pin Contact Part Numbers25 pin connector (P3271)Wire Gauge 18 AWG 20-24 AWGGarmin P/N 336-00023-00 336-00022-00Military P/N N/A M39029/63-368AMP N/A 205090-1Positronic FC6018D M39029/63-368ITT Cannon See Note 3 031-1007-042Table 2-3. Recommended Crimp ToolsWire Gauge 18 AWG 20-24 AWGHand CrimpingToolPositioner Insertion/Extraction ToolPositioner Insertion/Extraction ToolMilitary P/N M22520/2-01 N/A M81969/1-02 M22520/2-08 M81969/1-02Positronic 9507 9502-11 M81969/1-02 9502-5 M81969/1-02ITT Cannon 995-0001-584 N/A N/A 995-0001-604 980-2000-426AMP 601966-1 N/A N/A 601966-5 91067-2Daniels AFM8 K774 M81969/1-02 K13-1 M81969/1-02Astro 615717 N/A M81969/1-02 615724 M81969/1-02NOTES1. Insertion/extraction tools from ITT Cannon are all plastic; others are plastic with metal tip.2. Non-Garmin part numbers shown are not maintained by Garmin and consequently are subjectto change without notice.3. Alternate contacts for 18 AWG wire: As an alternative to the Positronic contacts listed (andprovided in the installation kit), the installer may use contacts made by ITT Cannon under P/N031-1007-001. These contacts require the use of a different crimp tool positioner than shownin the table, with the part numbers as follows: Daniels P/N K250, Astro P/N 616245, or ITTCannon P/N 980-0005-722.4. All wires must be passed through the backshell before being assembled to connector.5. In aircraft equipped with a dropping resistor for +28 Vdc bus voltage, make sure the droppingresistor is bypassed.