I've done some LED projects in the past and its pretty simple. If you stick with just plain white LEDs reels, its just 12v+ and gnd to complete the circuit. And like Bobb36 said, just use your multimeter to tie them into your switch. Easiest is to run the wiring down your awning track into the RV by the fire extinguisher (where that 45 degree cover is) and install the switch to your power source. I just know that "3M" adhesive that comes on these strips doesn't seem like the real deal. I just run a bead of silicone and basically set the strip in a bed of that.
If you want color changing LED strips, you can search for RGB LED strips, but it'll have 4 wires (a 12v+ and basically ground to RGB wires). It'll goto a controller with a remote, but I find the novelty wears off and is a pain to keep up with another remote.
You could pick up the kit in the last link (I think the awning on our 30DS is 16ft) and be a one stop kit. And if you need to cut to size these LED strips, its easily done with a pair of scissors. If you look at the strip, you'll see a cut line every 3 or so LEDs. Cut there and you'll be good. And same thing with the steps, just cut a 12" strip off that reel. Solder on a +/- lead and splice that into the current Orange Light wires and you'll be good to go. Just buy a blue LED reel.
http://www.amazon.com/LEDwholesalers...rds=awning+led
http://www.amazon.com/LEDwholesalers...rds=awning+led
http://www.amazon.com/LEDwholesalers...rds=awning+led