Assuming an N/A carburated application... what wires do you "need" in the engine bay? (To keep everything in the interior functioning as-stock)

So far the obvious are...

Headlights, windsheild wiper motor, windsheild sprayers, horn, coolant temp sensor, voltage sensor, oil pressure sensor... what else?

I'm going for the "N/A version of 1FastT2" here.

 

I would think you could get rid of all the fuel injector wires... I know this thread is old as hell but I knew an answer and wanted to add a post to my count