Ammeter waving when ignition is on.

Well, I've found where the problem was. It was the wiper switch. I figured the ticking had to be something just behind the dash and with it happening with the engine not running it had to be either the flashers, wipers, or radio as others already pointed out. I just unplugged everything until it stopped and it stopped at the wiper switch. I am still unsure if it's the switch it's self or a short elsewhere in the circuit. I'm going to leave that for another time in the near future. Thanks for the help guys, I learned a lot.