Yeah. I took a look at that and it's hard to see, but the labels look like I have them correct. +12v, D, Gnd.
Is there a right and wrong side of the string to connect the SSC too?
I have a set from a different manufacturer and they say the input side is the side opposite the IC. These did not have a label with them, but had a pigtail on them suggesting the input side is the same side as the IC.