I installed the Engine monitor unit and the MFD B/U battery on the shelf, but I had to move the Comm slightly forward as I found on the test fit it was needed to avoid the MFD - which actually wasn't a big deal. Then I installed the ADS-B unit on the instrument Sub Panel, but rather than nut plates I decided to use two #10 sheet metal screws due to to tight access on the backside of the Sub Panel, not a biggie since the ADS-B unit weighs only a few ounces. I can always change it if it becomes necessary. Then, moving to the rear of the aircraft, I installed the Delta Pop ADS-B antenna and attached the RG-400 cable to both the antenna and ADS-B unit. I also installed the two Delta Pop Comm antennas in the locations specified by Vans.