My car radio died, so I got a small amp that has fm and I have to wire power to it. then all I have is my speaker wire connectors at the back of the amp . So I can wire it to my speaker system . It will take a lot of digging around. which is a hassle but if I can wire from my speaker terminals to a 3.5mm plug . I can then simply plug it into my radio. which I have been doing with my cell. So I'm just thinking about getting a cord to plug into the cigarette light socket and I'm hoping I can wire from my speaker connections to a 3.5mm plug. Thanks.