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Old 02-07-2018, 08:10 AM
bomber_JB bomber_JB is offline
Join Date: Sep 2008
Location: Evergreen CO
Posts: 22
Default RV-10 New Panel signal wiring diagrams

I've built a RV-7A. My son-in-law and I are just starting an RV-10. We know the panel is down the road but we're considering it now. We've settled on most of the panel components and can hire it done but want to do it ourselves.
Where would we find schematics or signal wiring diagrams that connect Garmin products like:

Two Garmin G3X touch screen with interface module
Garmin COM
Garmin autopilot
Garmin Audio panel
Garmin GTN 625 GPS/MAP
Garmin GTX 45 transponder


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Old 02-07-2018, 08:18 AM
9GT's Avatar
9GT 9GT is offline
Join Date: Jan 2010
Location: Southern Michigan
Posts: 1,537

You will find the 850 page G3X installation on the Garmin website under Downloads: Steinair does a really nice custom CAD drawing that makes it a lot easier to see the whole picture though and well worth the price. Oh,,,,and you can buy all your goodies from him too!
David C.
Howell, MI

RV-9A: Under Construction. N161RV (Reserved)
RV-10: N959RV Completed 12/29/2013 SOLD 08/23/2016

"Donor Exempt" but donated through Dec. 2019
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Old 02-07-2018, 09:24 AM
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ppilotmike ppilotmike is offline
Join Date: Jan 2010
Location: Denver, CO
Posts: 1,882


I'd also recommend SteinAir. How are you progressing on the tail kit?
Mike Rettig
EAA Chapter 301
VAF Dues Current: Paid for 2019 on 12/03/18
RV-10 (41PX Reserved) Fuselage
F-14 (Pedal Plane - Daughter's Project) "Flying"
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Old 02-07-2018, 02:30 PM
BobTurner BobTurner is offline
Join Date: Dec 2011
Location: Livermore, CA
Posts: 5,454

Originally Posted by bomber_JB View Post
We've settled on most of the panel components

Itís fun to dream, but way too early to lock yourself into avionics choices. Avionics choices change every year; todays choices will be obsolete by the time you fly.
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Old 02-07-2018, 03:29 PM
leok leok is offline
Join Date: Apr 2013
Location: Clarkston, MI
Posts: 233


Check this thread out. I posted diagrams on most of what you mentioned.

I agree, you are way too early to settle on specific components unless you are looking to build very quickly. On the other had, I would like to have had a lot more info earlier in my build, so this might help scratch that itch.
Building my RV-10 since Oct 5th 2014
Flying .. once I figure out how to pay for everything
RV Hotel
Dues paid 2018
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Old 02-07-2018, 10:28 PM
DRMA DRMA is offline
Join Date: Jan 2016
Location: Sugar Land, TX
Posts: 283


LEOK did a great job of laying out a lot of the process in his thread referenced above. And it is obvious from his posting that he attended the AEA class that is specific to the G3X installation ( ). I think they hold the class about twice a year. I took it last year and highly recommend it if you are planning to wire your own panel.

You might want to consider having a shop cut your panel for you. I just received my cut panel from Aerotronics, and they did a great job of working with me on the design, and then cutting it. I also purchased my components from them. I believe Stein will do the same thing, and both are very well regarded for their work.

As stated above, don't make any final decisions or purchases of your avionics until you are nearly complete with your build. The advances in avionics are rapid, and so today's equipment may be obsolete in just a couple of years. I had spent some time doing a high level design of the LRUs and thought I knew what I was going to install early last year, and within about 6 months Garmin came out with several new LRUs with a new magnetometer and new transponders with ADS-B in included. Had to change my design, and was sure glad I hadn't purchased the equipment yet.

Having said that, I did purchase the mounting kits for the autopilot servos about 18 months ago so that I could install the kits before closing the bottom wing skin (roll servo) and installing the cabin top (pitch and yaw servos behind the baggage bulk head). I also ran wiring in the wings and to the tail cone, including spare wires and conduit space, and I've used the space and a few spares already. So there are ways to do some pre-install work without too much risk of obsolescence.

Good luck with your RV-10 build.
Dave Macdonald

RV-10 Finishing Kit & FWF in-progress
2019 VAF Dues Paid
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Old 02-08-2018, 07:37 AM
bomber_JB bomber_JB is offline
Join Date: Sep 2008
Location: Evergreen CO
Posts: 22
Default Thanks to all

We sincerely appreciate all of the replies to our request. Great guidance and assistance.

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Old 02-08-2018, 04:53 PM
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MauleDriver MauleDriver is offline
Join Date: Aug 2006
Location: Lake Ridge Aero Park - Durham NC
Posts: 172

If you want to do it yourself, consider the Approach Fast Stack Pro Hub product. It is a customized wiring hub and wire harness set for just about any combination of products you can come up with.

After you have selected your panel components you just tell the knowledgeable folks at Approach Fast Stack what you have. They generally know and will advise you how exactly you want them connected for specific functionality, or will follow your instructions.

You will get a hub and wiring harnesses for each component. The harnesses will all connect to the hub where all/most of the signal connections are made. You will also get complete detailed documentation of how everything is connected (extremely useful down the line). If you later add or change a component, a new harness can be supplied that will simply plug into your hub.

I flew my '10 back in 2011. I never regretted any aspect of going with the hub. All that's really left for you to do is connect power pigtails to your electrical system (and doing the rest of the electrical system). It eliminates a massive amount of work while still leaving a satisfying amount of work to do. Having a Stein or Aeroelectronics do it is one way, this is another way at a lower cost. I've always wondered why more people don't go down this route.

BTW, I was going to have someone cut my panel for me but I found that with a grinder, drill press and hand files, the job went quickly and easily. Very satisfying! The key here is to do a good layout.

I worked a bit with Stein and Aeroelectronics - both great resources!

Here's a look at my (aged) panel:
Kitlog panel page
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