I've installed a airhorn couple months ago but without the relay that comes with it. So i ran it without my stock horn. I recently washed my car and then my horn didnt work. Then it would come back on and off. And now it doesn't work completely. I've checked the fuses and the stock horn relay makes a clicking sound when I push the button. I hooked up a test light to the horn wire and pushed it but the light doesn't go on. What is the problem? What should i do?