I recently had a situation where someone had purchased some RGBW LED strips, but he had no controller and needed the light strips to work within a few hours. So I took a small piece of circuit board and a 5 position DIP switch and made a quick controller.
On the bottom side the five pin connector for the LED strip just goes to the five pins of the switch. On the opposite side of the switches the black wire for the strip goes to +12 volts via a switch, the other wires go to ground via the switches. This can be seen in the next picture. A 12 volt AC adapter powers the LED strip.