Did you check voltage and ground, anywhere?
F2 16--30 amp fuse at the top, did you check that fuse for voltage? Use a test light or something, key on. Is it hot? If so, pull the run park relay, use jumper wire between cavities 3 and 5, switch side of relay, right side in diagram. The wiper should work on lo speed, depending on the problem. You should have done voltage and ground testing before replacing anything. You may be way ahead of me as far as testing? The relay has two sides, the switch side and control side, the control side needs voltage and ground to energize. The gem module ground relays based on input from wiper switch. good luck