How to Install LED Strips Yourself — Complete DIY Guide for Beginners

You Can Install LED Strips Without Hiring an Electrician

Many people assume that LED strip installation requires a professional. In reality, with the right equipment and a clear plan, it is a straightforward DIY project anyone can complete.

This guide walks you through the entire process from start to finish, step by step — even if this is your first time.

Equipment Checklist

Before you begin, gather everything you need.

Core Equipment

1. LED Strip — choose the right type for your project, e.g. COB LED Strip 480C 24V
2. Power Supply (PSU) — must match the voltage of your strip, e.g. ARUM Hyper Switching Power Supply 24V
3. Controller / Dimmer — if you want to dim or change colour, e.g. a Rotary Dimmer Knob or App Controller

Recommended Accessories

4. Aluminium Profile Channel — manages heat and gives a clean, professional finish, e.g. Flanged Aluminium Profile
5. Connectors — for corners and joins, e.g. Corner Connector or Wire Connector
6. Wire — AWG Wire for extended cable runs
7. LED Cove Moulding — LED Molding if you are creating an indirect ceiling cove

Tools

• Scissors (for cutting the strip)
• Tape measure
• Clean cloth + isopropyl alcohol (for surface preparation)
• Screwdriver
• Soldering iron (optional but recommended for permanent joints)

Step 1: Plan and Measure

Before buying anything, always measure first.

1. Measure the total length of the run using a tape measure along the exact path you plan to install.
2. Sketch a rough layout showing the route, corners, and where the power supply will sit.
3. Calculate your power requirement — check the wattage per metre of your strip, multiply by the total length, then add 20% headroom for your power supply rating.

Example: Strip rated 10 W/m × 8 metres = 80 W → use a power supply rated at least 96 W (80 W + 20%).

Step 2: Prepare the Surface

The installation surface must be clean, dry, and smooth.

1. Wipe the surface with an isopropyl-alcohol-dampened cloth.
2. Allow to dry completely.
3. For rough or textured surfaces (bare wood, uneven walls), mount an Aluminium Profile Channel first, then attach the strip inside the channel.

Pro Tip: Using an aluminium profile keeps the strip cool, significantly extending its lifespan, and gives a clean, professional appearance.

Step 3: Cut the LED Strip to Length

LED strips can be cut — but only at the designated cut marks.

• Look for the scissor symbol or cut line printed on the strip.
• Use sharp scissors and cut cleanly through the centre of the cut mark.
• Always cut straight, never at an angle.

Important: Cutting at the wrong point will disable the LEDs in that section. Double-check the cut mark before every cut.

Step 4: Wire the Connections

There are two main methods for connecting your strip:

Method 1: Snap-on Connectors — Easiest Option

Use a COB LED Strip Middle Connector or Wire Connector — simply clip onto the strip, no soldering needed. Ideal for beginners.

For 90° corners, use a Corner Connector.

Method 2: Soldering — Most Reliable

If you have a soldering iron, this method creates the strongest, most conductive joints.

1. Strip approximately 5 mm of insulation from the wire.
2. Tin the copper pads on the strip with a small amount of solder.
3. Solder the wire to the copper pad.
4. Do not hold heat on the joint for too long — excessive heat damages the LEDs.

Step 5: Stick the LED Strip in Place

1. Peel back the 3M adhesive backing a little at a time — do not remove it all at once.
2. Press the strip firmly along your planned route, applying even pressure as you go.
3. If using an aluminium channel, press the strip inside the channel first, then mount the channel to the surface.
4. For ceiling cove lighting, use LED Cove Moulding to conceal the strip and create soft indirect light.

Pro Tip: Orient the strip so the LEDs face the ceiling or wall — the reflected light will be soft and diffuse, hiding the LED dots entirely.

Step 6: Connect the Power Supply and Test

1. Connect the strip to the Controller/Dimmer (if using one).
2. Connect the Controller to the Power Supply output.
3. Connect the Power Supply to the mains.
4. Switch on and test!

Connection order: Mains outlet → Power Supply → Controller/Dimmer → LED Strip

Warning: Always verify the + and − polarity before powering up. A reversed connection will prevent the strip from lighting — though it usually will not cause permanent damage.

Professional Tips

1. Feed Power from Both Ends

For runs longer than 5 metres, connect the power supply to both ends of the strip. This significantly reduces voltage drop and keeps brightness even throughout.

2. Never Leave Rolled-Up Strip Powered

If you have leftover strip, cut it off — do not leave it coiled and powered. Heat accumulates in a coil and will damage the strip over time.

3. Always Use an Aluminium Profile Channel

Especially for strips rated 10 W/m or higher — the channel dissipates heat effectively, greatly extending the lifespan of the LEDs.

4. Position the Power Supply Carefully

Place the PSU somewhere well-ventilated, accessible for maintenance, and never covered. Use an In-Wall Electrical Box if a flush, tidy finish is needed.

Pre-Installation Checklist

• Measured total run length
• Calculated power requirement (with 20% headroom)
• Power supply voltage matches strip voltage
• Surface is clean and dry
• Strip cut only at designated cut marks
• Polarity (+/−) verified before powering up
• Power supply placed in a ventilated location

Installation not going to plan? Need advice? Contact ArumStores — we’re happy to help at every step!