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C9 LED Christmas Light Sets

C9 LED Christmas light sets bundle a pre-wired stringer and ProCore® C9 bulbs together — just screw the bulbs into the stringer and hang. The standard format for rooflines, architectural outlines, and large-scale outdoor displays. The Christmas Light Emporium carries C9 ProCore® string sets in 25-light, 25' configurations in faceted and smooth lens finishes, in a full color range plus ColorSplash exclusive blends. Steady-on and twinkle variants available.


Backed by our Reindeer Proof™ Warranty.

Transparent, Fair Pricing

Pro Grade Value All Year Long
Built to Last

Engineered for Years of Use
Reindeer Proof™

Industry-Leading Warranty
Exclusive Color Palettes

You Won't Find Elsewhere

43 products

Everything You Need to Know About C9 LED Christmas Light Sets

C9 LED Christmas light sets bundle a pre-wired stringer and ProCore® C9 bulbs together — the standard format for rooflines, architectural outlines, and large-scale displays. Screw the bulbs into the stringer and hang. Available in a full color range in faceted and smooth finishes, with twinkle variants.

What’s in This Collection

C9 ProCore® Faceted Sets — Pre-wired C9 stringer with faceted ProCore® bulbs included. Full color range: warm white, cool white, red, green, blue, orange, purple, pink, teal, gold, multicolor, and ColorSplash exclusive blends.

C9 ProCore® Smooth Sets — Pre-wired C9 stringer with smooth ProCore® bulbs. Full color range.

C9 Twinkle Sets — Pre-wired stringer with ProCore® twinkle C9 bulbs. Each bulb blinks independently at its own random interval. Warm white, cool white, multicolor.

Set vs. Buying Separately

Sets are the easiest starting point. If you already own C9 stringers, buying bulbs separately is more economical. To extend an existing run, buy additional stringers and matching bulbs.

How to Choose

C9 LED sets are pre-wired strings designed for rooflines, gutters, fences, and architectural outlines where large bulbs create bold impact at a distance. Measure your roofline footage before selecting a set length, and check the bulb spacing matches the look you want. Choose a color or multicolor combination that complements your display, and verify the LED type suits your preferred brightness and look.

Frequently Asked Questions

What’s the base type on C9 sets? C9 bulbs use an E17 intermediate base. All C9 sets in this collection use E17 socket stringers.

What are C9 sets used for? Rooflines, architectural outlines, and large-scale displays.

Are C9 sets dimmable? Steady-on sets are dimmable. Twinkle sets may not be dimmable or may display undesirable behavior when used with a dimmer.

What’s the Reindeer Proof™ Warranty? Our in-house warranty covering manufacturing defects and performance failures. Duration varies — see individual product pages.

Browse Related Collections

C9 LED Bulbs | C7 LED Light Sets | C7/C9 Stringers | ProCore® LED Bulbs

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