I hardwired my radar detector today, took me about 15 minutes. I have the radar detector right in the middle of the window, so i ran the wire up the window into the ceiling, I just tucked it into the ceiling cover over to the a pillar, there is a piece of trim that is held on by one screw, you can see it when you open the door, I just ran the wire down the a pillar behind this trim, then through a small hole by the fuse box, then across the kneedash to the stereo, and quickconnected it to the accessorie wire going to the headunit, so when I turn on my ignition, the radar detector comes on, and when i turn off the ignition... I think you get the idea.
On another note, radar detectors arent illegal here in missour, but the cops use vg-2 (radar detector-detector)and if they know you have a radar detector, they find some reason to pull you over. anyway, my radar detector is vg-2 undetectable, so the cops dont know I have one. My radar detector does real good against radar, gives me alot of warning, but it doesnt warn laser until youre right up on it, as with all radar detectors, its just hard to detect laser, especially if youre driving behind another vehicle.