I bought one that was just a 3 wire relay so it only does one pulse, the eBay auction says it is for appradio 1, but won't work with appradio 2. I'm having to wait till I hear the relay click, which is right after I hit the allow button on my phone and then turn my ignition switch off and back on again to make it work. Thanks for any help, because I'm thinking I may just have to go hook up a switch if I can't figure this out. I just don't want to buy another fix if its just going to let me down. Here is a link to the one I bought, the seller has changed the description on it since I bought it,