TitleGarrison

“No bird ever flew nonstop from New York to Tokyo, or raced 15 miles high at triple the speed of sound.                                                                                                   
  But birds do something else.
  They do not conquer the air; they romance it..”

  Peter Garrison

HoursAndCounting

Jur's RV7 Aircraft Factory
2917 hours and counting
Some decisions in life are bare of any obvious logic

 

Systems

29/12/2023 - Transponder wiring and master trim disconnect - 5h30

Details
Parent Category: Instruments / Electrics
Category: 3. Systems
Hits: 45

I installed the Dynon SV-BAT-320 backup battery. Next to hanging the unit itself, you have to connect two wires to the D37 dynon harnass.
Then check in the setup menu where the backup battery is detected and testing status is shown.

Then started assembling the wiring harnass for the remote TRIG transponder radio. Part of these wires connect to the TRIG control unit head on the panel, one goes to VPX for power and GND block.
My TRIG transponder is installed remotely under the baggage area so that it's close to the antenna and the TXPR coax can be kept short. This requires some long wires going to the TRIG control head.
Started crimping pins and inserting them in the connectors according to the pinout scheme in the TRIG manual.

 Same for wiring on the control unit connector.

Then installed the connector on the TRIG box.

 The wiring runs forward through the passenger side conduit and moves passed the F704 on the right side, then back to the center and through the conduits to the panel.

 In the top right of the picture below, you see the connector installed in the TRIG control unit head.

Below this head, I installed the master trim disconnect switch. This is an ON-OFF switch which will disconnect the signal on the aileron trim and elevator trim power wires when switched in OFF mode. I decided to do this in order to have an interuption control on the trim motors in case of runaway trims.

Electrics/Systems

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It’s possible (not likely) that I’m not as smart as I think I am. (Occasionally, I have moments when I know this to be true. Fortunately, the feeling passes quickly.) Although I have tried to make this information as accurate as I can, it is not only possible, but also quite likely, that erroneous and misguided information lurks within these pages. I cannot and do not warrant these pages to be error free and correct. Furthermore, I accept no liability for the use of this (mis)information. And, as many would say, your mileage may vary. If, after reading this, you are intent on proceeding, please be aware that the contents of this site are protected by copyright (copyright © 2011 and 2012). Nonetheless, you may copy this material subject to these two conditions: (1) any information used is for non-commercial purposes, and (2) the source of the material is properly credited. Of course, you may link to any page herein. At some articles, snippets of the plans from Vans are visible. These are for educational and illustrations purposes only and should never be used as plans for part construction or assembly as plans may have changed since the picture was taken and more important they are protected by Copyright by the Vans Aircraft Mothership company.

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