Billet Proof Designs Hydraulic Rear Brake Light Switch for Harley Dyna (2008–2017) — Direct-Fit, Corrosion-Resistant

Billet Proof Designs Hydraulic Rear Brake Light Switch is a direct-fit replacement for Harley Dyna models (2008–2017) that restores reliable brake light activation and long-term corrosion resistance. This heavy-duty switch replaces Harley part number 72026-08A and is engineered to withstand heat, chemicals, and salt exposure that shorten the life of lesser switches. Built with an EPDM diaphragm compatible with DOT 3/4/5 fluids, silver-plated terminals and a zinc-plated steel body, it targets riders who need consistent electrical contact and improved longevity in wet, salty, or high-heat conditions.

How does this switch improve brake-light reliability?

The switch uses silver-plated terminals and a robust internal diaphragm to maintain strong electrical contact and resist tarnish or leakage that cause intermittent lights. Better contact and proper sealing reduce the chance of a dim or non-functioning brake light when it matters most.

• Silver-plated terminals for low-resistance electrical connection
• EPDM diaphragm resists common brake fluids
• Zinc-plated body reduces corrosion in salty or wet environments

Will it fit my 2008–2017 Harley Dyna model?

This switch is designed as a direct replacement for HD #72026-08A and fits a range of Dyna models from 2008 through 2017. Confirm compatibility by checking your bike’s current part number or model list before ordering.

• Compatible with FXD Super Glide and FXDL Low Rider
• Fits FXDWG Wide Glide, FXDB Street Bob, FXDF Fat Bob
• Works with FLD Switchback models in the specified years

What materials and tests ensure durability?

The connector housing uses engineered plastic formulated to resist high heat and common automotive chemicals, while the zinc-plated steel body offers enhanced rust protection. Billet Proof Designs performed salt-spray comparisons showing longer time to visible red corrosion versus OE parts.

• High-temperature resistant engineering plastic connector
• Zinc-plated steel body for improved corrosion resistance
• Salt-spray tested with longer corrosion delay than OEM

How simple is installation and maintenance?

Installation is straightforward for anyone familiar with brake-line-mounted switches: remove the old unit, install the replacement, and reconnect the electrical plug. Minimal maintenance is required—periodic inspection for leaks or terminal corrosion is recommended.

• Direct-fit replacement for HD #72026-08A—no modifications needed
• Plug-and-play electrical connector with durable terminals
• Inspect seals and wiring occasionally for peak performance

Who is this for? Riders who own a 2008–2017 Harley Dyna and want a tough, reliable brake light switch built to resist heat, chemicals, and corrosion will benefit most. This part suits daily commuters exposed to road salt, weekend riders who demand long service life, and mechanics who prefer a dependable, direct-replacement component that minimizes troubleshooting and repeat replacements.

FAQ

Q: Does this replace Harley part number 72026-08A?

A: Yes. This Billet Proof Designs switch is a direct replacement for HD #72026-08A.

Q: Is the diaphragm compatible with DOT brake fluids?

A: Yes. The EPDM diaphragm is compatible with DOT 3, DOT 4 and DOT 5 brake fluids.