Okay, I was able to snap some pictures that might help...I'll try to make this work (and make sense). I placed the controller under the steering dash and tied into the 12v accessorie socket for power, this way it has power when I press the switch.
I ran the switch under my radio face. Then it is just running your light wires in the way you want; I put one zone in the cabin of the boat, and ran zone two to the swim deck.
To get the seats off, first you have to locate the bolt plate on the seat, about 2 per seat but it varies. Here is a picture of the one via the storage locker (easiest one to get to by far!).
Next, you have to find all the screws on the bottom of the seat. Here is a close up pic (not easy to get a good picture).
Here is the back of the seat, focused on the screw plate. Be careful here, I had a screw get bound up in the fiberglass really bad and had to cut it off with a dremel (this was where the lots of cussing came in). After looking at it closer, looks like the screw was "glued" in, from the factory I'm assuming? Once you have all the screws and bolts off, it's a matter of gently pulling on the bottom of the cushion and lifting up.
The seat slides down on the metal brackets. If the seat doesn't slide up very easy, check again and make sure you have all the bolts off! Once you get the hang of it, it's fairly easy. The tricky ones are the swim deck, you'll need a "small person" (in my case, my 11 year old boy) to crawl back under the rear seats. These are by far the most trouble.
Here is a close up of the hole. Drill them about 1-1.5 inches above the light so the cushion completely covers them. Make them just wide enough for the connection to pass through.
Here is the light with the seat on, tucked up nice and tight. Before I took any seats off, I marked the bottom edge of the seat where I wanted the lights with a silver sharpie. This will help with the placement...learned this AFTER taking all the seats off. Needless to say, I got pretty good at taking the seats on and off!
After you get all your lights ran, make sure it works! Then after confirming they all work, go back with waterproof tape (you'll need more, not enough in the kit) and wrap your connections. Then go back and hide your wires.
Hope this helps, let me know if you have any other questions.