I've got the next base 312gw in works car. Work don't know, I just need to remember to count it when I do stock take. Its hard wired in, I just use the 12v adaptor when I have it in the Zed. With it falling off, I think it only happens when its really hot. I think its a really good bit of kit, one I hope I'll never need. I turn the mic off on mine in case I go to court and people laugh at my aweful music, but after gangzoom says you have hear his indicators on his, maybe I should turn it back on...although my singing will drown them out I guess.