Today I was able to connect the headset wires to the radio connector. Of course that took much longer than I anticipated as I found it very fiddly cutting, stripping, labelling & crimping at arms length from outside the fuselage, The loom includes wiring for the "Lemo" sockets power & ground, I've performed a continuity test to ensure I have the pins in the correct positions & can find no short circuits to ground. I need to install the antenna & control sticks before testing the operation of it all, that will need to wait until tomorrow.