How to Use Mr.Hobby LED Dimming Module for Kit Lighting

By Argama Hobby - Gundam Model Kits & a Pro Build Space for ... | Published: 2026-10-21

Category: How-to Guides

Learn to install and use the Mr.Hobby LED Dimming Module (LED05A) to adjust brightness on your model kit lighting projects with no soldering required.

Quick answer

The Mr.Hobby LED Dimming Module (LED05A) lets you control light intensity on your model kit lighting with a simple connection—no soldering or electrical knowledge needed.

Why add a dimming module to your kit lighting?

Fixed-brightness LEDs can be too harsh for a display or diorama. A dimming module gives you the flexibility to match the mood, reduce glare, or make the light look more natural. The LED05A is compact enough (8mm wide, 37mm long) to hide inside most kits without altering the build.

Step-by-step installation guide

1. Identify the connection point: Locate the inline connector on your Mr.Hobby LED unit. The module is designed to be inserted between the power source and the LED strip or bulb. Do not cut or strip wires—just unplug the existing joint. Common mistake: Trying to solder the module. The one-touch connectors are meant to be used as-is.
2. Insert the dimming module: Plug one side of the module into the LED unit and the other side into the power source. The module is not directional—either orientation works. Ensure the connectors click fully into place. Checkpoint: If the LEDs do not light, verify the connectors are fully seated and the power source is turned on.
3. Adjust brightness: Turn the small potentiometer on the module with a screwdriver or tweezers. Rotate clockwise to increase brightness, counterclockwise to dim. The module remembers the last setting even after power is cycled. Common mistake: Forcing the potentiometer past its stop. It has a limited range—stop when you feel resistance.
4. Secure the module inside your kit: Place the module in a hollow cavity (e.g., torso, backpack, base) using double-sided tape or a dab of tacky glue. Avoid covering the adjustment screw if you plan to change brightness later. Checkpoint: Test the fit before gluing—make sure the module does not block other parts or wiring.

Product facts

Mr.Hobby LED Dimming Module (LED05A): The LED Dimming Module connects in the middle of your existing Mr.Hobby LED unit with one-touch connectors—no soldering required. You can add brightness control to your model lighting project in minutes, even if you have no electronics experience.
Mr.Hobby LED Dimming Module (LED05A)