How to Extend LIFX Lightstrip with 40 Inch Extension

By LIFX Smart Lighting | Wi-Fi Bulbs, No Hub Required | Published: 2026-10-18

Category: How-to Guides

Learn how to add a LIFX 40-inch extension to your existing Lightstrip setup for longer runs and more creative lighting layouts.

Quick answer

To extend your LIFX Lightstrip, connect the 40-inch SuperColor Lightstrip Extension directly to the end of your existing Lightstrip Kit. No hub or extra wiring is needed, and you can cut the extension to fit precise lengths.

Why use a dedicated extension instead of splicing

LIFX Lightstrip extensions are designed to plug directly into the end connector of your Lightstrip Kit. This avoids the voltage drop and connection issues that can happen with DIY splicing or third-party extenders. The 40-inch length gives you flexibility to wrap around corners, behind furniture, or under cabinets without leaving gaps.

Keep in mind that each extension adds to the total run. LIFX supports up to 33 feet of connected Lightstrip. Plan your layout before adding multiple extensions so you stay within that limit.

Step-by-step: Adding the 40-inch extension

1. Confirm you have a LIFX Lightstrip Kit: The extension only works when connected to a LIFX Lightstrip Kit (or LIFX Z Kit). It does not include a power supply or controller. If you are starting fresh, buy the kit first. Check that your existing strip has the female connector at the end. The extension has a matching male plug.
2. Plan your layout and measure the run: Decide where the extended strip will go. The 40-inch extension can be cut at marked intervals if you need a shorter length. Remember that you can connect up to 33 feet total, so count how many extensions you will need. Cut only at the marked cut lines. Cutting elsewhere will damage the strip and void the warranty.
3. Connect the extension to the kit: Align the connector pins on the extension with the socket at the end of your Lightstrip Kit. Push gently until the connector clicks into place. The connection is keyed, so it only fits one way. Do not force the connector. If it does not slide in easily, rotate the plug 180 degrees.
4. Test the extended strip before mounting: Plug in the Lightstrip Kit and open the LIFX app. The entire run should light up as one continuous strip. If only the kit section lights up, check the connection between the kit and the extension. A loose connection is the most common cause of a dark extension. Unplug and reseat the connector firmly.
5. Mount the strip and manage excess length: Peel the adhesive backing and press the strip onto a clean, dry surface. If you have leftover length after a corner, you can cut the extension at a marked line or loop the extra behind furniture. Avoid bending the strip at sharp angles. Use the included corner clips or a gentle curve to prevent damage.

Product used in this guide

LIFX SuperColor 40" Lightstrip Extension - 700 Lumens: A 40-inch extension designed to expand your existing LIFX Lightstrip or LIFX Z. Requires a Lightstrip Kit to get started. You cannot use this extension on its own; you need a LIFX Lightstrip Kit as the starting point for power and Wi-Fi control.
LIFX SuperColor 40" Lightstrip Extension - 700 Lumens