Covers for Empty C7 and C9 Light Bulb Sockets

Empty C7 and C9 sockets look unfinished and can let moisture into the stringer wire over time. Socket covers — also called socket stuffers — fill unused sockets cleanly, protect the socket interior, and give your installation a polished, intentional look. The Christmas Light Emporium carries socket covers in colors that match standard stringer wire. See Christmas light accessories for the full accessories range.

What's In This Collection

Opaque and translucent socket covers in green and white to match standard stringer wire. C7 and C9 compatible. Plug into the socket exactly like a bulb. See electrical accessories for additional installation hardware.

How to Choose

Match the socket cover color to your stringer wire — green covers on green wire, white covers on white wire. Use socket stuffers on any socket position where you don't want a lit bulb: alternating sockets for a specific spacing effect, skipped positions for design reasons, or end sockets left empty at the termination of a run.

Frequently Asked Questions

What is a socket cover?

A socket cover (also called a socket stuffer) is a cap that fills an empty C7 or C9 socket. It keeps moisture out of the socket and gives the installation a clean, finished appearance where a bulb isn't installed.

Do socket covers need to be the same color as the stringer wire?

For the cleanest appearance, match the socket cover to the wire color. Green covers on green wire and white covers on white wire blend in seamlessly.

Can socket covers be left outdoors in rain and snow?

Yes. Socket covers are designed for outdoor use and provide weatherproofing for empty sockets.

Are socket covers compatible with both C7 and C9 sockets?

Socket covers are sized for specific socket types — C7 covers fit C7 sockets (E12), C9 covers fit C9 sockets (E17). Make sure to match the cover size to your stringer wire socket.