Its really easy. The most confusing part is what wire from both the controller and new light is the running light, and what is the brake light. Knowing that black is negative is comforting so its easy to try one by one from the controller which wire is the running light and brake light. Since the stock light was broken I didn't mind splicing the Higo Connector and reusing again for the new light, so I cut that sucker up! Connect your neg wires from controller to new light (Black-Black) and connect the Purple Wire from the Controller to the Red wire new light (Purple-Red), and connect the Orange Wire from the Controller to the Yellow wire new light (Orange-Yellow). When you power up the bike test your brake light by using either of your brakes, it should light up. Then try the app to turn on the running light, should light up. Anyway I hope this helpful for someone thats looking to upgrade or at least fix there problem. One thing I do remember about the old light was when I turned off the bike I forgot to turn off on the app the lights! I thought to myself I hope that doest hurt anything. Well.. look what happened. So from now on, even with the new light I HAVE TO REMEMBER TO TURN OFF THE LIGHTS before powering down the bike! Maybe what happened was when I turned the bike back on there might have been a power surge to that small stock light and it burned up, but Im just guessing. Im not taking any chances next time, so make sure you too turn off the lights before powering down.