1973 Cuda wiper motor not working

I had read some information on wiper motors and looks like my old one was dead. I checked the terminals from the battery shown on some posts.
also noted if not grounded it will not work if issues were found there. I did ground from the battery to the ground strap on the wiper motor but still did work.
I bought a new wiper motor online from "A1 Premium" but installing that one it didn't work? I retested the wires from the switch low and high speed the the test light shows they are getting...

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Author: 73-Cudah2