How To Install Fiesta String Lights

Fiesta string lights can transform your outdoor space into a festive oasis, perfect for entertaining or simply enjoying a relaxing evening. These charming lights add ambiance and warmth to any patio, deck, or backyard. In the video above, This Old House master electrician Scott Caron demonstrates how to upgrade from a temporary lighting solution to a permanent, weatherproof installation that’s both beautiful and energy-efficient. In this article, we guide you through installing fiesta string lights safely and effectively. 

*Unless otherwise noted, costs in this article reflect an average of prices that our team found from hardware stores like Lowes and Home Depot, and on Amazon.com.

Preparing for Installation of the String Lights

Before diving into the installation process, it’s essential to gather the necessary materials and plan your lighting layout. Proper preparation will ensure a smooth and successful project.

Gathering Materials

To install fiesta string lights, you’ll need the following tools and materials:

• Fiesta string lights with weatherproof sockets
• Weatherproof outdoor switch box
• Weatherproof outdoor outlet box
• Flexible conduit
• Wire conductors (three separate wires)
• Wire nuts
• Pliers
• Drill/driver
• Stainless steel guide wires
• Eyelet hooks
• S-hooks
• LED bulbs

Planning Your Layout

Take time to plan your lighting layout before beginning the installation:

1. Measure the area where you want to hang the lights.
2. Determine the number of string lights needed to cover the space.
3. Identify the best locations for the switch box and outlet box.
4. Plan the path for running the flexible conduit and guide wires.

Safety Considerations

Safety should be your top priority when working with electrical installations:

• Always turn off the power at the main electrical panel before beginning work
• Use proper safety equipment, such as gloves and safety glasses
• Ensure all electrical components are rated for outdoor use
• Follow local electrical codes and regulations
• Consider hiring a licensed electrician if you’re unsure about any aspect of the installation

Installing the Power Source for the String Lights

The first step in creating a permanent fiesta string light installation is establishing a reliable power source. This involves running power from an existing outlet to a new outdoor switch and outlet.

Extend Power to the Outdoor Switch

1. Locate an existing power source, such as an indoor outlet, and turn off the electricity.
2. Measure and cut the flexible conduit to reach from the power source to the outdoor switch location.
3. Feed three separate wire conductors through the flexible conduit.
4. Splice the existing wires to the new wire conductors using pliers and wire nuts.
5. Reconnect the existing outlet.

Install the Outdoor Switch Box

1. Mount the weatherproof outdoor switch box at the desired location using a drill/driver.
2. Feed the flexible conduit into the switch box.
3. Connect the wires to the switch according to the manufacturer’s instructions.
4. Secure the weatherproof cover plate to protect the switch from the elements.

Add an Outdoor Outlet

1. Run a second length of flexible conduit from the switch box to the location for the outdoor outlet.
2. Mount the weatherproof outdoor outlet box using a drill/driver.
3. Feed the wires through the conduit and into the outlet box.
4. Connect the wires to the outlet according to the manufacturer’s instructions.
5. Secure the weatherproof cover to protect the outlet from moisture.

Pro Tip: Heath, a licensed electrician featured on Ask This Old House, recommends adding duct sealer on the connector installed on the back of the outdoor box to help seal up the hole you just made in the side of the house. He also advises running a small bead of silicone along the back edge of the box at the top and on the two sides to seal it against the building—but leaving the bottom open so any moisture that gets behind the box has a chance to drain out.

When attaching the weatherproof cover, note that it includes a gasket around the edges that allows the cover to stay closed even when something is plugged in. As electrician Heath noted on Ask This Old House, he also likes to add a little bit of silicone at the top of the cover because, over the years, he’s found they tend to leak just a little there.

Hanging the String Lights

With the power source in place, it’s time to hang your fiesta string lights. This process involves creating a support system and carefully arranging the lights for maximum visual impact.

Create a Support System

1. Install eyelet hooks at strategic points along your patio, deck, or desired hanging area.
2. Run two stainless steel guide wires under tension across the length of the space.
3. Secure the guide wires to the eyelet hooks, ensuring they’re taut and level.

Arrange the Lights

1. Unpack your fiesta string lights and inspect them for any damage.
2. Starting at one end, use S-hooks to attach the string lights to the guide wires.
3. Create a zigzag pattern by crisscrossing the lights across the guide wires.
4. Adjust the spacing between lights to achieve your desired look.

Connect and Test

1. Plug the string light cord into the newly installed outdoor outlet.
2. Turn on the power at the main electrical panel.
3. Test the lights by flipping the outdoor switch.
4. Make any necessary adjustments to the light placement or tension of the guide wires.

Maintenance and Care of Your Fiesta String Lights

Regular maintenance is key to ensuring that your fiesta string lights continue to shine brightly and safely for years to come.

Regular Inspections

Perform safety checks periodically, such as examining the wires and sockets for any signs of wear or damage. Check that all connections remain secure and weatherproof and ensure the guide wires are still taut and properly supporting the lights. Look for any loose or burned-out bulbs that need replacement.

Cleaning and Upkeep

Keep your lights looking their best by gently cleaning the bulbs and sockets with a soft, dry cloth. Remove any debris, such as leaves or cobwebs, that may accumulate around the lights. Tighten any loose connections or hardware as needed, and replace any damaged or weathered components promptly.

Seasonal Considerations

Adapt your maintenance routine to the changing seasons:

• Before winter, ensure all connections are watertight to prevent moisture damage
• After storms, check for any damage or displacement of the lights
• In areas with heavy snowfall, carefully remove any snow buildup on the lights and wires

Pro Tip: Moisture and electricity don’t mix. Cover the male and female ends of light strands with electrical tape or encase them in plastic freezer bags to help keep water out. To prevent ice buildup, position the connections between light strands in a way that lets air circulate around them so moisture can evaporate before it freezes. For lights hung on trees, use electrical tape to secure connectors to the trunk a few feet above the ground to keep them out of runoff that might pond there.

Energy Efficiency and Light Bulb Selection

Choosing the right bulbs for your fiesta string lights can significantly impact both the ambiance and your energy consumption.

LED Advantages

LED bulbs offer several benefits for outdoor lighting. They feature extremely low energy consumption—often less than 1 watt per bulb. They boast a long lifespan, reducing the need for frequent replacements. They are durable and resistant to breakage, and they’re available in various colors and warmth levels to suit your preferences.

Pro Tip: The efficiency gains of LED bulbs are dramatic. As demonstrated on This Old House, a standard incandescent bulb runs at roughly 65 watts, while an equivalent LED uses only about 10 watts—that’s approximately 80% less electricity. Even though LED bulbs cost more upfront, the long-term savings on your energy bill more than make up for it.

Selecting the Right Bulbs

Consider these factors when choosing bulbs for your fiesta string lights:

• Wattage and energy consumption
• Color temperature (warm white for a cozy feel, cool white for a brighter atmosphere)
• Dimming capabilities, if desired
• Weather resistance rating

Energy-Saving Tips

Maximize the efficiency of your outdoor lighting:

• Use a timer or smart plug to automate when the lights turn on and off
• Consider solar-powered options for areas without easy access to electrical outlets
• Opt for warm white LED bulbs, which typically use less energy than colored options

Pro Tip: Heath Eastman, Master Electrician, recommends: “Make patio string lights easier to operate by adding a weatherproof Wi-Fi-enabled smart plug: This allows you to turn them on or off via an app on your smartphone.” This is especially helpful during winter months when you’d rather not trudge outside to unplug lights before a storm.

Our Conclusion

Installing fiesta string lights is an excellent way to enhance your outdoor living space. With proper planning, installation, and maintenance, you can create a beautiful and long-lasting lighting solution that transforms your patio or deck into a magical retreat. By following these steps and prioritizing safety and energy efficiency, you’ll be able to enjoy your new outdoor ambiance.

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