Keep riders behind you informed and stay street legal with a precision-engineered hydraulic stop light switch built to Original Equipment standards. Standard Motor Products delivers the consistent electrical response and durable construction that riders have depended on across every era of Harley-Davidson performance, from vintage Panheads to modern Milwaukee-Eight engines.

Key Features

Direct direct-fit replacement for Harley-Davidson hydraulic brake light switch systems.

Bakelite insulators protect against heat and vibration for extended service life.

High-conductivity brass terminals ensure consistent, reliable electrical contact.

Heavy-duty contacts rated for all riding conditions and climates.

Available in four terminal configurations to match your specific model year and brake switch mount.

Technical Specifications

Actuation: Hydraulic.

Switch Type: Brake light.

Thread Size: 1/8 in. NPT (MC-SLS1, MC-SLS2, MC-SLS4) or 3/8-24 banjo bolt (MC-SLS5).

Terminal Types: Screw post (MC-SLS1), standard spade (MC-SLS2, MC-SLS4), spade with banjo bolt mount (MC-SLS5).

Insulators: Bakelite.

Contacts: High-conductivity brass, heavy-duty.

Riding Style: Street.

Sold As: Each.

Fitment Notes

Select the variation that matches your motorcycle's brake switch mount type and wiring connector style.

Screw-terminal version (MC-SLS1) fits 1958-1970 Big Twin and 1977-1978 Sportster Cafe Racer.

Standard spade version (MC-SLS2) covers 1971-2005 across FX, FXR, Touring, Softail, Dyna, and Sportster platforms.

Late-model spade version (MC-SLS4) fits 2003-2020 Touring, Softail, Dyna, Sportster, and V-Rod models.

Banjo bolt version (MC-SLS5) fits exclusively 2008-2017 Dyna models with banjo bolt-style brake switch mount.

Review the Fitment tab for a comple