190-01879-11 GMA 245/245R Installation ManualRev. 6 Page 2-32.3.2 Additional Equipment Required• Cables: The installer will fabricate and supply all system cables. Interconnect wiring diagrams aredetailed in Appendix C.• Hardware: #6-32 100° flat head screw (6 ea.) and #6-32 self-locking nut (6 ea.). Hardwarerequired to mount the GMA 245 installation rack is not provided.• Stereo headphone jacks (up to 6), microphone jacks (up to 6), 3.5mm stereo jacks (up to 2).Insulating type jacks or insulating washers should be used for all jacks to isolate them from aircraftchassis.• For GMA 245R, Hardware: (4-6 ea) #10-32 bolts and (4-6 ea) #10-32 self-locking nut forinstalling the mounting bracket to the aircraft frame.• For GMA 245, Tool: 3/32" Allen for tightening the unit into the rack and backplate.• Push/Pull (that can be manually reset) circuit breaker (5 Amp recommended).• Tie Wraps or Lacing Cord• Ring Terminals (for grounding) #8 size, Yellow, Blue, and Pink.• Silicon Fusion Tape (GPN 249-00114-00) to wrap the cable bundle. Silicone fusion tape isavailable at most major suppliers like Mouser, Digi-key, and Home Depot.• Solder Sleeves for terminating the shields of the cable to the GMA backshell. See Section 3.3 forpart numbers.• Optional USB Type A Panel Mount/Bulkhead Jack to Type A USB male cable to use withGMA 245R for connecting to a panel mounted USB jack. Example L-COM parts for reference-UPMAA-1M (3.3 feet), UPMAA-075M (2.46 feet), UPMAA-05M (1.64 feet).• Heat shrink tubing• SD card needed for updating software in the GMA 245 when not integrated in a G3X Touchsystem. Garmin recommends using a 4 GB Sandisk® SD card.Insulating Washers for Headset and Microphone Jacks can be found at the following suppliers:SwitchcraftS1029 – shoulder washerS1028 – flat washerMouser502-S-1029 – shoulder washer502-S-1028 – flat washerDigi-keySC1147-ND shoulder washerSC1146-ND flat washerNewarkS1029 shoulder washerS1028 flat washer
