Just got my first electric car and it's great so far. I got the BEX i3 and it is just perfect, except missing that low end bass. Iv'e got the Harman system, and it is great to a certain point. I ended up with the very small Cerwin Vega 10" self powered model. 200w rms should be just about right I think. It's so tiny, I'm mounting it to the back of the seat and it barely takes up any room. Going to see about wiring it up once the wire kit gets here. I saw the speaker input info, but what about 12v acc on?