Wiper Delay for 68 Barracuda

I thought I might have figured it out after watching this video:

[ame="https://www.youtube.com/watch?v=1Ww5-pmiokc"]Windshield Wiper Motor Wiring Tutorial - YouTube[/ame]

but the spare motor I have isn't working like this. When the park is engaged, it actually reverses the motor direction. I'm pulling my hair out.