Wiper motor issues
I had forgotten to include this with my original post. Here's a web site with your car's wiring diagram.
http://www.mymopar.com/wiringdiagrams.htm
Print it out and hopefully it'll help. The wiper switch is a possibility, but when you said by adding a ground things stated working I suspect it's a resistance issue.
Either way, you have enough to get you going. :salut: