If you have a V3pro series headlamp, you will need to connect the cable to both the battery pack and the headlamp before attempting to turn it on.
Please follow these instructions:
The short end of the cable has to be connected to the battery pack.
The long end of the cable has to be connected to the headlamp.
Make sure that you keep the end of the cable straight when connecting it. The connection can be done in one single move, without shaking or forcing the cable. Pushing the cable in an inclined position or forcing it may damage the pins inside the headlamp or the battery pack.
The cable has two small feet that will fix it to the battery pack and headlamp. You might hear or feel a slight click when connecting the cable. This means that the cable is properly connected.
If this did not help you with your problem, feel free to contact your Suprabeam dealer and they will assist you.