When working on Lightning XS458 at Cranfield some years ago, we thought it would be quite a nice idea to film a high speed taxi run using the Lightning's own G90 Gun Camera.

This cine film camera lives just inside the air intake, underneath the radar nose cone, and is activated using a button on the pilot's control column / stick.

So before trying this out, I built a fairly simple test rig to prove the camera works, and also to verify the aircraft wiring to the camera, so it was two test rigs in one. It simulates the aircraft, and the camera independently.