Pie Adapter. First off....What a total pain in the ASS. First the ashtray assembly was stuck somehow. Finally was able to jiggle it out. Then the little tab that allows you to remove the adapter/plug in the back of the head unit broke, barely even touched it and it snapped off. So that left me with nothing to disengage the plug. After sticking a tiny watch screwdriver in there for about oh...25 minutes i was finally able to pull the plug out. I got the adapter installed pretty easily. Once i got everything plugged back in and wired up the radio wouldnt go back in. There is such little space behind the head unit that the clunky adapter was taking up too much room. So after about another 10-15 minutes of trying to get everything lined up and out of the way i FINALLY got it to go back in, screwed in place, done. Go to put the ashtray assembly back....doesnt fit. Spent another 10-15 minutes clearing a path for it, screwed it in place, done. Go to open the ashtray...doesnt open. Apparently when it slides open the wiring moves with it and it was jammed. Took the ashtray back out, fixed the wiring, screwed in place, done. Turn the car back on, test it out, only one side of car has audio. WTF. Take the ashtray back out and notice in all the messing around one of the RCA cables came unplugged. Fix it, go to screw the ashtray back in, drop one of the screws and it dissappears under the seat. After looking for it for about another 5 minutes i see it lodged way under the power seat tracks and its impossible to get to. Take the remaining screw and try to match it in the garage for a comparable screw. I find one, screw everything back in. Turn the car on....IT WORKS. Its really not a hard install but what the hell, anything that could go wrong did. But it was definately worth while. It sounds 200% better than the old RF transmitter. Thought i'd share.