Garmin GHA-15 Radar Altimeter

K40 Positioner for DMC Crimper
The 10-32 mounting screws are included. If you need more, those are MS51958-67, e.g. McMaster part number 91400A833 (pack of 25, same bolts needed for GPS antennas)
4 x 10-32 nut plates, e.g. K1000-3 / MS21047L3
63/1000 2024T3 doubler, e.g. 4 x 4 inches
Optional: USB-B bulkhead debug connector (instead of Garmin pigtail part no 011-01782-00 which is just a coupling, not a bulkhead connector) at Amazon
Suitable 10ft laptop cable at Amazon
Color code: Black: GND (GHA-15 pin 20), Red: +5V (GHA-15 pin 19), White: D- (GHA-15 pin 10), Green: D+ (GHA-15 pin 9)
The wire will fit through a 1/4 inch snap bushing (before crimping the pins)

GHA-15