How to Splice Low Voltage Landscape Lighting Wire

Stretch out the existing low voltage landscape lighting wire (make sure it's disconnected from any power source first). Cut the wire in the middle with a pair of wire cutters.

Take the wire you'll be inserting into the circuit. It should be of a similar gauge and construction. Cut a length that's long enough so that when inserted between the cut sections of the original wire you'll have enough wire to place your light in its destination. As in Step 2, separate the leads of the wire on the ends and strip about 1 inch of insulation from the leads.

On each of the leads of the new piece of wire, slide on a 2 inch long piece of heat-shrink tubing. There will be four pieces in total--two on each end of the new piece of wire.

Twist together the old and new wires to create a continuous length of two-lead wire. At each joint, apply a hot soldering iron, heat the wire, and then apply solder until it flows into the joint. Remove the soldering iron and repeat.

When the joints are cool, slide the pieces of heat-shrink tubing over the joints and direct the heat of a blow drier onto the tubing until it shrinks tight over the joints.

Plug your low-voltage system in and test operation, then place the wire and lighting fixtures as required.