Okay I went and picked up an ohm meter, I was hoping it was going to look a little easier to understand. This is what I bought http://www.actron.com/product_detail.php?pid=16156
So let's see ... from what I can tell, I plug the black wire into the COM port, and the red into the Fused port and turn it to 200 Ohms. To test the horn, which wire do I touch with each side? Does the engine need to be running?
I apologize if I'm a moron about this - I've never done this before. I appreciate any help, and will try to compensate you as much as I can.
P.S. If you find it easier to talk on the phone, I'm more than willing to do that. I can call you to save you charges. If you'd rather do this, email me your phone number at my email Beamer@BeamerWorld.com