To all of you who have electric valves on your air horns where did you get them? I'm going to have to replace my second one from Rickson Truck Acessories now, and I don't feel like throwing another $20 away on one. Granted they last usually 2 yrs but I wonder if anyone knows where to get one that's durable for the same price? I have a manual valve that I'm going to convert to eventually, but I'm still planning out how I'm going to run the air line into and back out of the cab. 
