Yours should be in the same location as a 36RL. In the bedroom at the ceiling light closest to the bath room at TV side. Remove the light fixture (glass and fixture). You may havee to reach up in there and feel around but it will be there.
On my FB it a gray cable comes from the antenna to the booster somewhere near the bedroom tv then to the splitter in the ceiling as described above then to bedroom/living room tvs, check to be sure on the splitter the outs go out & the in is in the in.
Danny & Linda
Former '13 FB owner