Help with AC/Heater Harness

So the saga of my wiring harness swap continues. I finally got the bulk of the new dash harness in. I also had to order a new AC/heater harness for under the dash. I have most everything connected and ran the two wires for the AC/heater harness into the bulkhead, but I am left with the two connectors below and I don’t know what they go to. My old harness had those same connectors but in my stupidity I didn’t think to take a picture of what they are connected to. To be honest, I’m not even sure if they were connected to anything. Both wires are blue. I would appreciate any insight from you guys about where you think these might go.

Slightly unrelated, anyone recall which side of the ammeter the red wire goes to and which side the black goes to? I clearly should have been paying more attention.

And on an unrelated note, anyone got any advice on how to get the defrost vent duct back into the vent under the dash?

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