Hmmmmmm. I'm thinkin' here and that's sometimes dangerous, but...

Since you 2002 owners seem to want the 2000/2001 intermittentness on that there rear wiper, me wonders if some easily available 2000/2001 relay thingamajiggy would plug in to the 2002 rear wiper circuitry...

There, I thunk and spoke. All on you'se guys now.