Hi Holland. I only just saw your post above but you deleted it between when I saw and when I prepared the repo. 
Here I have everything from the earlier pipeline updated for SU 4 or 5, but without the bridge component that had sim performance issues.
This is probably the most relevant part: msfs-gauges-dev/static/SDK/VCockpitExternal.js at master · davuxcom/msfs-gauges-dev · GitHub
This is the component that gets loaded: msfs-gauges-dev/src/IESI/IESI.js at master · davuxcom/msfs-gauges-dev · GitHub
If you have questions you can find me on Discord. I don’t visit the forums much anymore so I don’t see new messages right away.