It's been a few months, but from what I can recall It was all clips. You pull off the panel on the right side where the CD changer would go and start there. I seem to remember someone saying you could reach all the stuff from just removing that panel, but I was unable to. The panel that contains the defrost vent for the rear side window pulls up and out. If you can imagine the clips go perpendicular to the ground. So you have to take the panel "up and out". One thing I remembered is having to remove some of the cloth panel on the D pillar to get it out. I might not have, but I got it all dirty, so make sure your hands are really clean. There is already a grommet waiting for the wiring on the right hand side.
The plugs are a idiot proof and I did the install unassisted in a few hours. A friend would help because of the awkwardness of the hitch assembly, but a 5 gallon bucket was the perfect height to hold it in place. There is a Styrofoam piece that needs to go on top of the hitch to act as a cushion for vibration dampening I guess. It has some double sided tape on it. Make sure you look at the bumper you're pulling off to see how it goes back on.
The only error I made with the install was not hooking the parking sensors back up which required me taking the bumper off again.
Also it's a little tight to get the torx screws out in the wheel wells, but I found a ratchet at
Sears that is made for 1/4 bits. It is the bees knees. It came in a 3 pack with +25 offset, -25 offset and 0 offset. An invaluable tool for close quarters.
Good luck with the install and if you need any more help I'm happy to accept a plane ticket.
Here you can see the grommet on the right side and the non-hitch bumper you'll need to remove.
Finished Product
