FAQ

Does the kit include the LEGO® set?

No. We sell the LED light kit only. The LEGO® set shown in our photos is for demonstration and is not included.

Which sets do your kits fit?

Each kit is designed for a specific LEGO® set number. The product title and the set number on the product page indicate the compatible set (for example, kit 75192 fits LEGO set 75192). Please confirm your set number before ordering.

How is the kit powered?

Most kits are powered by USB — you can connect them to a USB wall adapter, power bank, or computer. Some versions include a battery box or remote control. The exact contents are listed for each version on the product page.

Is it difficult to install?

No. The kits are designed to be plug & play and come with step-by-step PDF and online instructions. No prior electronics experience is needed. The lights use thin, low-voltage wires that route through the set.

Will installing the kit damage my LEGO® set?

No. When installed according to the instructions, the kit does not require glue or permanent modification and can be removed without damaging the bricks.

What's the difference between versions?

The Classic version is the base light kit. Remote versions add a remote control, and Sound versions add a sound module. The exact contents of each version are shown in the version selector on the product page.

What if a part is missing or not working?

Contact us at support@fireflybricks.com with your order number and a photo or short video. Covered by our 2-year warranty, we will send the replacement part without requiring a full return.

How long does shipping take?

Orders are processed in 1–2 business days, and delivery generally takes 7–15 business days in the US and 7–20 business days internationally. See our Shipping Policy for details.

Can I return or exchange a kit?

Uninstalled kits in original condition can be returned within 30 days of delivery. See our Returns & Refund Policy.