Hoping someone can enlighten me... as I have found connection without its counterpart under the passenger seat.
Based on what I can research it may be called one of the following names: Acceleration Enrichment Control, Enrichment Relay, control Unit Acceleration Enrichment?
I can't seem to find much info on it.
See image from someone else I marked up to show what piece is missing:
https://i.imgur.com/uUBN9w5.png