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Thx for the comments. I have tested the switch and harness connection points and all is working as it should from what I can tell. I did install the honda wiper motor swap with relay so that might be causing part of the issue. However, the fact that the blue line goes to 12V when the button is pushed is still an enigma. I believe the wire should connect somewhere but it is not clear on my harness. I have replaced both the dash (used in great condition) and engine (new) harnesses along with the fuse panel to blade type so it could be a mismatch of parts that is creating the issue. For now, I intend to run the blue wire directly to the washer motor so I will at least have washer capability even if I have to manually activate the wipers.

Thanks for the feedback!