Install a dedicated, resettable circuit breaker (typically 5A for 28V systems, 7.5A for 14V systems) clearly labeled "WXR" or "RADAR". Primary Pinout Connections (Typical High-Density Layout) Pin Number Function Name Cable Type Required Pin 1 Aircraft Power (Positive) 20 AWG Mil-Spec Pin 2 Aircraft Power (Positive) 20 AWG Mil-Spec Pin 3 Power Ground 20 AWG Mil-Spec Pin 4 Power Ground 20 AWG Mil-Spec Pin 12 Ethernet (HSDB) Out + Aviation-grade Quadrax / Shielded Cat5e Pin 13 Ethernet (HSDB) Out - Aviation-grade Quadrax / Shielded Cat5e Pin 14 Ethernet (HSDB) In + Aviation-grade Quadrax / Shielded Cat5e Pin 15 Ethernet (HSDB) In - Aviation-grade Quadrax / Shielded Cat5e Pin 22 RS-232 Tx (Config/Data) 22 AWG Shielded Twisted Pair Pin 23 RS-232 Rx (Config/Data) 22 AWG Shielded Twisted Pair Pin 45 Chassis Ground Braided Ground Strap Shielding and Grounding Best Practices
: Units must be zeroed (often while the aircraft is on jackstands) to ensure pitch and roll stabilization is accurate. Interface Integration
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: Installation should only be performed by a qualified Garmin aviation dealer or certified avionics technician. Safety Precautions :