I purchased second hand blue led trees. 18 in total that stand approx 1500mm high. Great for a chase sequence. They have a 12v 1000mA power pack which I'm going to cut off and control using a LOR DC board. I have a 12v 300w power supply from ray wu. I cut one of the power packs off and connected directly to the power supply. Lights worked. I Connected it thru the dc controller and it wouldn't work. So I tried another tree and it worked. Would I have fried the tree by connecting it directly to the 300w power supply. Will it still fry by going thru the board. If so is this what the inline resistors are for. If it is I have to figure out what resistors I have to solder in. And of course stop touching the hot end of the soldering iron and burning my fingers.