3 Speed Wiper Motor Question

does anyone have a diagram for the 3 speed wiper motor? i went to use them the other day and found out they were not functioning, i tested and i am getting power and ground to them so i was going to run through and check to make sure something didnt get crossed because i noticed the insulation is coming off, i didnt know if there was a way to test it or if it burned out, the red wire had broken and i soldered it back together but then i started seeing smoke from it, its on my 72 dart

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Just in case.
Your switch on the dash has to be grounded for them to work.