A/C wiring questions! Something looks funky to me.

[hamiltonben32h]

Hey Everyone,

New to the forum here! Just got an 88 Mighty Max and everything runs really well. The only issue Is the A/C does not blow cold. I checked all the fuses (under the driver side dash) and tried to follow what little I could find of wiring diagrams. I ordered a Haynes manual that will be here on Thursday. I started ohming out from my a/c and something seemed off with the signal. I cut off some old electrical tape and found that the positive from my A/C is teed into another wire that goes to this small box with two vacuum lines attached. I couldn't find a part number on the part nor find anything that resembled it in the few wiring diagrams I could find. Should Any of the wires off the a/c compressor be teed into anything? also what is the weird tiny box thing with two vacuum lines? I uploaded pictures of the box and the "splice". The green circle goes to my a/c and the red circle goes to the box. Also the box looks like it's missing something??

Thanks for any/all help