Yes the splitter is behind the ant. connection. To change the splitter (as I did) I removed the large pannel with all the switchs. This gave me greater access to the area. I then moved the splittler to the cabinet side wall for easier mantiance if needed. In doing all of this I found the connection on the ant. booster plates were loose tighted. I am not happy at all of the location of the king ant. Is yours right next to the AC unit.
Retired and never looked back