Hella 004019021 Electronic Flasher Unit 12V/24V 6-Pin with Mounting Bracket for Trailers

The Hella 4DZ 004 019-021 is a heavy-duty electronic flasher unit designed for towing vehicles and trailer combinations. Operating on both 12V and 24V electrical systems, this versatile unit is suited for a wide range of commercial and passenger towing applications. The electronic design delivers reliable, consistent flash frequency without the load-sensitivity issues common to thermal flashers.

Key Features:

• Dual voltage compatibility: Works on both 12V and 24V electrical systems
• 6-pin connector for secure, multi-circuit integration
• Includes mounting bracket/holder for clean, secure installation
• Load range: Supports 1–8 lamps rated at 18W or 21W per lamp
• Trailer-ready: Designed to operate indicator lamps on towing vehicles and trailers simultaneously
• Electronic operation: Provides stable flash rate and reliable lamp failure detection
• Hazard warning compatible: Supports hazard warning flasher function

The Hella 004019021 flasher unit features an electronic control system that monitors lamp load, enabling proper fault detection when a bulb fails — either by doubling the flash frequency or switching off the pilot lamp, depending on circuit configuration. The included mounting holder simplifies installation in cab or chassis-mounted locations. Cross-reference: Wehrle J. 53 007 006.