So while I await an answer from Zenith on my "elevator issue", I have moved on to other areas in the project. Can someone that has been before me help me with this. I am wiring the panel using the Composite Design Mini panel. Everything from the primary bus, and the avionics bus has been pretty simple. 18AWG does the trick for all these low draw items. I need help with the gauge wire needed for the other items. Master switch to battery relay, alternator switch to control, and back to the primary bus, battery relay, through the ammeter to the primary bus, starter switch to starter relay, and what about the two main connects on the Composite Design power panel. I know these take 1/4 bolts through the lugs, but this wire must be large. 

If anyone has a diagram, or can link me to one ( hey, if I was building a RV, there's tons on information out there) please let me know. I'm sitting here very frustrated with both the elevator issues, and a lack of basic wiring information for the 750 series. 

Views: 298


You need to be a member of Zenith Aircraft Builders and Flyers to add comments!

Join Zenith Aircraft Builders and Flyers

Comment by David Gallagher on August 3, 2016 at 6:21am


Are you familiar with FAA Advisory Circular 43-13 Acceptable Methods document?  Anyone building an airplane should have a copy for reference.  It is available for download for free from the website.  Chapter 11, and figure 11-2 in particular, will give you conductor sizes based off wire length and volts/amps.

Good luck,


New from Zenith:

Zenith Planes For Sale 

Classified listing for buying or selling your Zenith building or flying related stuff...


Weather Maps

Custom Instrument Panels
for your Zenith

Custom instrument panels are now available directly from Zenith Aircraft Company exclusively for Zenith builders and owners. Pre-cut panel, power distribution panel, Approach Fast Stack harnesses, Dynon and Garmin avionics, and more.

Custom Upholstery Kits for your Zenith Aircraft:

Zenith Vinyl Upholstery Kits

Zenith Apparel from EAA:

Zenair Floats

Flying On Your Own Wings:
A Complete Guide to Understanding Light Airplane Design, by Chris Heintz

Builder & Pilot Supplies:

How to videos from

Developed specifically for Zenith builders (by a builder) these videos on DVD are a great help in building your own kit plane by providing practical hands-on construction information. Visit for the latest DVD titles.

Aircraft Insurance:


West Coast USA:

Pro Builder Assistance:


Transition training:

Golden Eagle Aviation

Pianosa Flying Farm

Aircraft Spruce & Specialty for all your building and pilot supplies!

© 2020   Created by Zenith.Aero.   Powered by

Badges  |  Report an Issue  |  Terms of Service