Lights come on without control

I have a question, I hooked up the lights on my controller and nothing comes on, but if i add a second string of lights i will get a few lights to come on the first string and the second string will flash multi-color on select leds. if I continue to plug and unplug the second string of lights over and over eventually I can get all the leds on the first string to work. Any ideas?

I am using 30A power supply, Dig-quad, WS2811 Leds.