Sorry Dennis. BTW don't expect it to give you a result for "Dana" or "Wiper module", but it should give you sources for parts and RV salvage operations.
The only other thing I might suggest is the parts department of your local RV dealer or Camping World. Seems to me that CW used to have a "hard to find parts" catalog at one time. Wait ...... it's online here.
If memory serves DANA got out of the auto accessories business and got into something else, the line was, however, picked up by someone else. NOTE: this is a very old memory, my 1977 only new car I ever owned, was equiped with an after market cruise control... It was a Dana, leading to a re-write of "I've been working on the railroad"
Dana won't you drive, Dana won't you drive, Dana won't you drive my car, car, car.
You get the idea
Last time I had to order parts, the company name had changed
(Used Dana cruise controls for many years... NOTE: GM uses the same control layout, I suspect whomever makes them for GM is the company that took them over. so check with GM for a simular part)