Paul, I have a small fm receiver on my DT300 and it has powered speakers and it came with I 12 VDC plug, however I didn't use the receptacle in the small glove box. I wired it directly to the battery and placed an on/off toggle on the radio. It is fused. Never had a problem.You just have to remember to switch off the power to the radio when you turn off your engine. I have a brightly lit switch to help remember, Plays great and you can get quality sound at 65 mph. Mich about that and the wind noise takes over.. I got mine on e-bay, receiver, two powered speakers, all wiring you need and a wiring diagram. Oh and there was aa noise filer included, which I've never needed. I don't see why you couldn't wire it to the ignition switch to the power On terminal. That way when you shut down the engine, power to the receiver would be off.