Look at this thread, scroll down to post #16 to see what the original poster found:

http://www.forabodiesonly.com/mopar/archive/index.php/t-331097.html

Third from the bottom post says this:
"On some cars the wiper switch, just like the headlight switch, has an internal breaker."

I certainly may be wrong but I don't think the loud clicking is the limiter.

You can easily unplug things in a methodical way before spending any money.