Garmin G3x Wiring Questions

[Flybyjim]

Hi Dustin,

After reading the manual setup I had the harness made for my whole G3X system, this is one area I felt it was better to have someone build it that did it every day. I used Steinair for this service.

Jim

[Shadowrider]

I know the feeling! Seems like I need to just hire someone to come out and wire it all up for me🙂

[PapuaPilot]

No, it doesn't need any kind of keep alive power.

Most of the LRUs have 2 pins so you can power it from 2 sources if you desire.

[Shadowrider]

No, it doesn't need any kind of keep alive power.

Most of the LRUs have 2 pins so you can power it from 2 sources if you desire.

Thanks! My "reading" is not so bad.........my "recall" not so good

[Shadowrider]

Who knows the gtx45R? From what I am gathering, RS-232 (1) is used for GSU-25(adahars) RS-232 (2) is for the GDU 4xx (G3X touch screen). Do I just use RS-232 (3) for the GPS 20 input?

I guess what I am asking is I am running the GPS-20, which is providing wass gps signal to the transponder. Isn't the transponder going to use waas gps position and altitude from the transponder? So do I still provide info from the GSU-25, which is providing altitude via static pressure?