HVAC module location

[SeagrapesT]

Hello! I purchased a cabin/sun sensor harness from infotainment to upgrade from the 5" to 7" radio and regain the volume knob with a new-to-me hvac stack, but can't find where it mates to the "hvac module" which isn't the hvac stack itself. C/s said its behind the stack, but I only see a module label "LF antenna" behind it. I've read here its behind the glove box but c/s said no, that's not it. Anyone successful using this specifc harness to add the wiring for the two extra hvac sensors?

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[Terrymo]

No first hand knowledge. A search of AllDataDIY for HVAC Module shows this. Thats all I got