User Guide

Kits or Components?

If you're looking for step by step guides to using our kits, head on over to the Instructions page. You'll also find links to the instructions for each and every kit directly on that kit's page.

The following section shows how to install the lighting components correctly - this will make it much easier to follow the step by step guides, or to create your own lighting system.

If you have any problems along the way, check out the Troubleshooting Guide as well.

Installation Guide

This user guide is designed to help you properly identify and handle the various Light My Bricks components - ensuring a trouble-free installation.

Strip Lights

Our strip lights contain two individual LEDs and have a self-adhesive backing which can be used to stick directly on LEGO® 1x6 plates for easy mounting. Strip Lights are available in a variety of colours.


Bit Lights

Bit Lights are tiny LEDs that can fit underneath and in between LEGO® pieces. Bit Lights are available in a variety of colours and effects.

Expansion Boards

Expansion Boards allow you to connect multiple components. Simply connect your lights, connecting cables and power options to an expansion board to complete a circuit

Connecting Cables

Connecting Cables can be used to link components like Strip Lights and Expansion Boards together.

Power Options

Light My Bricks have a wide variety of powering options, including power sourced from batteries, USB or LEGO Power Functions.


Light My Bricks components are purposely built to be small enough to fit underneath and in between LEGO® bricks. However, this means the components are delicate and should always be handled with care.

Laying cables in between LEGO

Cables can fit in between and underneath LEGO® pieces, plates and tiles providing they are laid correctly between the LEGO® studs. Do NOT forcefully join LEGO® together around cables; instead, ensure they are laying comfortably in between each stud.

Connecting cables to Strip Lights

Take extra care when inserting connectors to ports on the Strip Lights. Connectors can be inserted only one way. With the Strip Light facing up, ensure the side of the connector with the wires is exposed is facing down.

Connecting cables to Expansion Boards

Take extra care when inserting connectors to ports of Expansion Boards. Connectors can be inserted only one way. With the expansion board facing up, look for the soldered “=” symbol on the left side of the port.

The connector side with the wires exposed should be facing toward the soldered “=” symbol as you insert into the port.

If a plug doesn’t fit easily into a port connector, don’t force it. Check that the plug is facing the right way before trying to connect again.

Installing Bit Lights under LEGO

When installing Bit Lights under LEGO pieces, ensure they are placed the correct way up (Yellow LED component exposed). You can either place them directly on top of LEGO studs or in between studs.

When pushing the LEGO piece onto the light, be careful you don't trap the cable and accidentally cut it. For small pieces such as the 1x1 and 1x2 pieces shown below, place the LEGO piece at an angle on the cable and then hinge the piece down into place.  This prevents you from trapping the LED component and forcing the cable away from it, cutting the connection.


We offer quite a few special effects boards so here's a quick run-down on the options, what they do, and how to wire them up.

The output from these effects boards is generally limited to one or two ports, but you can connect expansion boards to these too.  So if you have two traffic lights and are happy for them to go Red / Amber / Green at the same time, then connect a 6 port expansion board to each output of the board.  Then connect the Green from both traffic lights to the Green expansion board and so on.  

Similarly to use the emergency services mode of the Multi Effects board, consider connecting each output to an expansion board and spreading multiple lights around your model.  Connect them alternately to each board and you'll have an impressive light effect.

Important to note is that in a complex setup you will have some expansion boards providing power to lights and boards, and some sharing the output from an effects board. 
Make sure not to mix these up - you don't want your RGB control board being turned on and off rapidly by running off a flicker effects board output!

Multi Effects Board

The most flexible effects board currently on offer, this provides three different lighting effects.

  • Pulse
  • Emergency
  • Flicker


  • 2 x Unlabelled ports.  These are the outputs.  Connect to lights or to expansion boards to spread the effect to more lights. Each port turns on and off separately based on the effect you choose.
  • +5V.  This is the input for power - connect to a battery pack or to an expansion board providing power.


For the controls on this board it's best to experiment to get the effect you want.

  • Slider.  This has three positions to select which effect you want.
  • Dial. This controls the speed. 

RGB Control Board

This board is the brains of our RGB lighting range.


  • 2 x RGB_OUT.  These are the Outputs and use special RGB connectors (extra large) which can connect to RGB lights or expansion boards.
  • +5V. A standard Light My Bricks connector to supply power to the board.  Connect to a battery pack or an expansion board providing power.

Also important on this board is the Infra Red receiver fitted to the top surface. This must be exposed in the model so that your IR remote control has line of sight to the receiver to let the signal through.

Traffic Light Effects Board

To create an effect like a traffic light this board has three outputs.  The lights connected to these outputs run in sequence Red - Red Flashing - Amber - Amber Flashing - Green - Green Flashing and so on.


  • 3 x ports labelled R, Y, G.  The labels are arbitrary but show you the sequence of the lights so you might as well conenct R to RED lights, Y to YELLOW lights and you can probably guess where to connect the G...  As noted above these could go to effects boards to share the output to multiple traffic lights, but bear in mind of course they will show RED at the same time as each other.
  • +5V. A standard Light My Bricks connector to supply power to the board.  Connect to a battery pack or an expansion board providing power.


  • If you have a set with 2-Colour traffic lights showing just Red and Green, or pedestrian crossing Stop/Go lights, then switch the slider from 3 to 2.  The Yellow light will be disabled and the lights will alternate from Red to Green and back again.  For a standard 3 colour traffic light ensure this slider is set to 3.

Flicker Effects Board

This great little board can be used in so many places.  The three outputs all flicker on and off, and all are slightly out of sync with each other.  So if you have three candles next to each other, for example, they will not flicker at the same time as that would look odd.  Instead they produce a great and slightly random movement which looks great for simulating flames and in all sorts of other situations!


  • IN.  A standard Light My Bricks connector to supply power to the board.  Connect to a battery pack or an expansion board providing power.
  • 3 x OUT.  These are the three outputs.  Standard connectors to run lights or expansion boards to share the effect to multiple lights at once.

Remote Power & Sound Board

The newest and biggest board in the range - this long anticipated board allows you to remote control the lights on your LEGO set.  You can turn them on and off, dim them, and play audio from the connected speaker.

In many setups this board will be placed right at the start of your wiring - between the power supply and the first component or expansion board.  Often with larger setups multiple lighting kits will connect to an expansion board, and this in turn would go to a USB power supply.  In this environment the +5V on this board would connect to the USB power supply, and the OUT connector would go to the expansion board to control all the kits.


  • +5V. A standard Light My Bricks connector to supply power to the board.  Connect to a battery pack or an expansion board providing power.
  • Out. The output.  A standard connector designed to connect to your lights - typically this would be connected where the Battery Pack or USB Connector was before, so you can control all the lights from one place.
  • IR.   A specialist larger port for connecting the Infra Red receiver module.
  • Audio.  Optional - only required if you want to use the audio component.  This connects to the speaker module.


  • A single push button on the top of this board allows you to play / stop the currently selected audio track.  Useful for testing.



Check out the Troubleshooting guide.  

And don't hesitate to Contact Us! We're here to help.