If it's a straight rod of plexiglas, you can replace it with either a replacement handle ($$$) or go to a plastic distributer (eBay or Amazon) and buy a piece of plexiglas rod. I did and in a few minutes with a file I had a new, un-crazed handle. While I had it apart, I added a 12 v LED wired into the porch light for added pizzaz!
Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI