Well, I got my air conditioner aux fan working properly, that series resistor was burned out. I couldn't get the parts fastlane to let me buy a part, I mean I would click on buy, and nothing would happen, and nothing was in my shopping cart at checkout. I had tried to get a part somewhat local, but no one has any benz parts in my neck of the woods. So, I got one from another source, but I really wanted to get my parts here. What am I doing wrong for the online buying?