[otherguy]

Describe what happens when you run the code.

Where do you see lights?

Add print statements to your code, is it running properly?

Check for proper voltages on the LED strip, and at the arduino, with a multimeter. If you're using the compression nut things shown on the AM page, maybe you are crimpped down on the wire jacket somewhere and not on the wire conductor.

Provide photos of your setup. It's hard to debug a problem we can't see. Provide more information and people will be better able to help you.