Hydraulic Brake Light Switch For Harley-Davidson

Direct Replacement Hydraulic Brake Switches

Ensure your brake lights function reliably with these premium hydraulic stop light switches. Designed as direct replacements for Harley-Davidson OEM components, these switches feature heavy-duty contacts and durable corrosion-resistant housings. Whether you are restoring a vintage Panhead, maintaining an Evo, or fixing a late-model Dyna, we have the correct configuration for your braking system.

Choose Your Switch Style

Please select the correct style from the dropdown menu based on your terminal type and year range. See the specifications below to match your OEM part number.

Screw Terminals (Vintage)

• Part Number: MC-SLS1
• Fitment Era: Pre-1979 Applications
• Thread Size: 1/8″ NPT
• Terminal Type: #8-32 Screw Post (Screws included)
• Replaces OEM: 72002-51A
• Notes: Ideal for vintage restorations requiring the classic screw-on wire connection.

Spade Terminals – Standard

• Part Number: MC-SLS2
• Fitment Era: 1979–2003 (General Application)
• Thread Size: 1/8″ NPT
• Terminal Type: Standard Spade
• Replaces OEM: 72023-51C
• Notes: The standard replacement for most Evolution and early Twin Cam era models.

Spade Terminals – Late Model

• Part Number: MC-SLS4
• Fitment Era: 2004–Up (Late Model)
• Thread Size: 1/8″ NPT
• Terminal Type: Standard Spade
• Replaces OEM: 72023-51E
• Notes: This updated version is designed to withstand the higher heat and vibration found in late-model Sportster and Twin Cam applications. Physically interchangeable with the Standard version but recommended for newer bikes.

3/8-24 Banjo Bolt – Spade Terminals

• Part Number: MC-SLS5
• Fitment Era: 2008–2017 Dyna / Softail
• Thread Size: 3/8″ – 24 UNF (Fine Thread)
• Terminal Type: Standard Spade
• Replaces OEM: 72026-08A
• Notes: This switch acts as the banjo bolt securing the brake line to the master cylinder. Note: Requires new crush washers for installation (not included).

Check the fitment tab for specific model compatibility.