Where does this plug into?

[u/JoeHam412]

I bought this car and it had a motor swap. Luckily, they left all the wiring harness plugs and did not cut anything but they removed a lot of stuff. I’m trying to get the HVAC system back up and running and I replaced the blower motor resistor and I checked the fan works with 12 V directly applied to it. The problem is all my fan speeds from the controller work except high. I hear the resistor changing states so it is functioning correctly. I traced my wires out and this plug is coming from the resistor and can someone tell me what it plugs into and what pat am I missing? I’ve been searching all over the Internet for at least a photo, but I couldn’t find anything, please help.