Receptacle test fit and it fit perfectly. It’s designed to use the recommended pins (posted above), or I think if you had 20 guage Deutsch DTM male pins they would work too. Pin size is about 1 mm, the hole you press them through is about 2mm (might need to be opened up with a drill bit). After the wires with their pins are pushed through, some epoxy would hold them in I think.
I put a zip file with the stl and FreeCAD models here:
Would recommend PETG, but PLA is probably alright depending on where you put it in the cab.