How to Pair Flex-Connect Adapter with Sea Dragon Lights
By SeaLife Cameras | Published: 2026-10-17
Category: How-to Guides
Learn step-by-step how to mount a Sea Dragon light to your action camera using the Flex-Connect Adapter. Get stable, well-lit underwater shots without the guesswork.
Quick answer
Attach the Flex-Connect Action Camera Adapter to your GoPro or similar action camera using the standard M5 screw threads, then slide it into any Flex-Connect grip, handle, flex arm, or cold shoe mount. Add a Sea Dragon light to the same mount or an adjacent Flex-Connect port for balanced underwater illumination.
What You Need for the Setup
To pair a Flex-Connect adapter with a Sea Dragon light, you need three core components: the Flex-Connect Action Camera Adapter (product ID 1776139), a Flex-Connect grip or tray that has at least one open Flex-Connect port, and a Sea Dragon light head (such as the Sea Dragon Duo 5000F Set or a single Sea Dragon 2500F). The adapter uses standard M5 screw threads to secure your action camera, but note that a thumb screw is not included—you will need to provide your own or use the one from your camera mount.
If you are using the Sea Dragon Duo 5000F Set, the included Flex-Connect Dual Tray already has two ergonomic grips and two Flex-Connect ports. This tray gives you a dedicated spot for the action camera adapter and another for the light head, keeping the rig compact and stable.
Step-by-Step: Mounting the Adapter and Light
- Attach the Flex-Connect Adapter to your action camera: Align the M5 screw threads on the adapter with the mounting point on your GoPro or similar action camera. Tighten the thumb screw (not included) until snug. Do not overtighten—this can strip the threads. Checkpoint: The camera should sit flat against the adapter without wobble. If it rocks, the screw may be cross-threaded.
- Slide the adapter into a Flex-Connect grip or tray port: Insert the adapter’s dovetail into an open Flex-Connect port on your grip, handle, flex arm, or cold shoe mount. Push it in until you hear or feel a click. The locking mechanism should hold it firmly. Common mistake: Forcing the adapter into a port that already has another accessory. Only one item per port.
- Mount the Sea Dragon light on the same or adjacent port: If using a single Sea Dragon 2500F, attach its Flex-Connect mount to a second port on the same tray or grip. For the Sea Dragon Duo 5000F Set, both light heads already come mounted on the Dual Tray—just slide the camera adapter into the remaining port. Checkpoint: Ensure the light head is angled to match your camera’s field of view before tightening any locking knobs.
- Balance the rig and test the alignment: Hold the assembled rig in your hand or attach it to a housing. Adjust the flex arm or grip position so the light beam overlaps your camera’s lens center. A common mistake is pointing the light too far off-axis, which creates harsh shadows. Verdict: A well-aligned light eliminates shadows and gives you even underwater exposure. Test in a pool or shallow water before a real dive.
Product Facts
- Flex-Connect Action Camera Adapter: The Flex-Connect Action Camera Adapter lets you add your GoPro or similar action camera to Flex-Connect accessories. It uses standard M5 screw threads and pairs with a Flex-Connect grip, flex arm, handle, or cold shoe mount. Thumb screw is not included. This adapter is the bridge between your action camera and the SeaLife modular mounting system. Without it, you cannot securely attach a non-SeaLife camera to the same tray or arm that holds your Sea Dragon light.
