The '84 came with a trailer hitch that takes a 1-1/8" square bracket. In
other words, there's a square hole into which should fit a bracket. On to
the bracket I would fasten the hitch ball. Sure seems small to me.
Everything I see is more like 1-1/4" - 2" +.  What size is your hitch? Any
idea where I might find the part I'm looking for?

Bradley Flubacher
State College, PA
'82 VW diesel westy
'84 GL wasserboxer