G5 Pinout; Figure 1-6 J51 On The G5; Table 1-3 J51 Pin Descriptions - Garmin G5 Installation Manual

1.7 G5 Pinout

Use the information in this section with other applicable sections/appendices to construct the wiring in
accordance with FAA approved standard practices.
1.7.1 J51
Pin
1
2
3
4
5
6
7
8
9
1.7.1.1 Aircraft Power
The G5 operates using power from one 14 / 28 VDC input. Pin 8 (AIRCRAFT POWER 2) is not used as
a part of this STC.
NOTE
AIRCRAFT POWER 2 is for connecting to an alternate power source, such as on aircraft with
two electrical buses.
1.7.1.2 RS-232
The G5 has one RS-232 channel that may be used to output and/or receive GPS data from an
existing GTN 6XX/7XX or GNS 4XXW/5XXW. The G5 can utilize a RS-232 connection to an
existing GTN or GNS when available to receive GPS data instead of an external GPS antenna. The
RS-232 port used on the GTN or GNS needs to be configured to MAPMX Format 1. If an existing
connection is made to the required GTN RS-232 port, the G5 connection may be spliced into the
existing wiring at the GTN connector.
Garmin G5 Electronic Flight Instrument Part 23 AML STC Installation Manual

Figure 1-6 J51 on the G5

Table 1-3 J51 Pin Descriptions

Pin Name
CAN-H
CAN-L
UNIT ID
RS-232 RX 1
RS-232 TX 1
SIGNAL GROUND
AIRCRAFT POWER 1
AIRCRAFT POWER 2
POWER GROUND
Page 14 of 53
I/O
I/O
I/O
In
In
Out
--
In
In
--
190-01112-10
Rev. 2