I have a 2003 Sequoia with factory JBL 6disc changer and rear entertainment unit (RSE). I am trying to install the USA SPEC PA15TOY ipod interface and can't get it working right. I intalled it (per included intstructions and Crutchfield supplement) to the back of the CD changer and it worked for about 2 minutes. After that, the iPod shows it's charging and looks like it's connected, but the car stereo doesn't register that it's there. After a month of contacting crutchfield and USA SPEC and trying a second unit, I'm still at this point. The guy at USA SPEC just told me that I was an idiot and didn't know what I was doing, then he said that I had to hook it up to the DVD not the CD changer, but he wouldn't tell me anything more about how to do it! Crutchfield said that didn't make sense and gave me an RMA for the thing instead. After more research, I found an application guide for it that says"Connect @ radio. *If the vehicle has RSE, connect PA15/20-TOY @ ECU". Even though I'm mad that this info was not provided by either USA SPEC or Crutchfield with the installation instructions and I have been insulted by the "support" at USA SPEC, I really want my iPod in the car so I'm still trying to make this work. Does anyone else have this thing working in their Sequoia? If so, how? What is the ECU, where is it and how do I hook this up to it? I had no problem with installing it using the CD changer, but this is a step beyond what I know.