Advent Air Conditioners like part # ACM135 come with a connector that pairs up directly with the standard 6-wire connector. If you have a 9-wire connector then you need the kit # ACRG15 as well.
For wiring I'm attaching some photos of diagrams for you to reference. We typically recommend having a professional do the installation so if this is something you've never done before I recommend at least having someone who has done this type of installation before come out and walk you through... view full answer...