I have a JVC h/u and use a PAC SWI-Jack interface. The controls quit working the other day and I messed with them tonight and can't get it working. It seem like the interface is okay, as it has power and lights up like it's supposed to. I don't have a stock radio to check them with since it had an a/m unit when I bought it. The weird thing is I can't detect any power at the fuse. That can't be normal, but I don't think it would be a wire as I haven't really messed with anything. I redid the connection where you tap into the interface wire and that didn't do anything, either. Any ideas? I'm going to try and locate a radio this weekend that I can plug in if I can't figure it out just to eliminate anything with the a/m radio and interface. I tried reprogramming it and it starts out working right, but it doesn't recognize when I push the controls.