Well, I have been to both places and searched before I originally posted. I found electrical for 1988, which I understand is different from the 1989? I have downloaded the 1989 Raider Haynes Service manual which has nothing in it about the rear wiper electrical, that I could locate.
I do not see a 1989 Raider electrical, and so I did download the Monty electrical info, which is not helpful in locating the rear wiper relay. I had searched and found previous post by Fasteddy replacing his entire rear harness, but found nothing on the location of the relay. I guess I am at a loss. Thanks anyways!