Accessories DC Mini usb Power adapter

[cdma]

I would like to install a permanent DC power adapter for my INC. I have a cigarette adapter but I am tired of it being in the way. So I have tried two things. First of all just pulling the wires out of the adapter and hard wiring it in. Well the phone is smart enough to know that it is not the right one. Then I tried to hardwired the outer connectors in but the cigarette adapter knows that it is not hooked up correctly because the power seems to be more of an alternating current. It works it does not work. It works it does not work. So that method won't work either. Anyone know of an adapter out there I can use so that I do not have to plug into the cigarette lighter assembly?