HELLA 2559 Licence Plate Light LED 9 to 33V

HELLA 2559 Licence Plate Light LED 9 to 33V

ADR 48/00 compliant LED licence plate light with IP67 sealed construction, insulated earth circuit compatibility, 0.5m pre-wired cable, and 5-year warranty, suited to trucks, trailers, and heavy commercial vehicles operating across 9–33V electrical systems. Note: 2 lights are required to achieve ADR 48/00 compliance.

Product Overview

The HELLA 2559 is a compact LED licence plate light delivering ADR 48/00 compliant number plate illumination for trucks, trailers, and heavy commercial vehicles. Designed for surface mount installation on rear panels, trailer tailgates, and number plate brackets, the 2559 provides clean, efficient LED illumination of the rear licence plate across a wide 9–33V Multivolt input range covering both 12V and 24V heavy vehicle electrical systems. An important compliance note: two HELLA 2559 units are required to meet ADR 48/00 licence plate lighting requirements for heavy vehicles. This dual-lamp requirement is standard for ADR 48/00 compliance on trucks and trailers and should be accounted for when purchasing. The 2559 is suitable for use on insulated earth circuits, making it compatible with the isolated earth wiring configurations found on many trailer electrical systems where the trailer body is not used as the earth return path. The compact 85 x 70 x 38mm body installs neatly onto rear panels and number plate brackets with a 40mm centre-to-centre mounting distance, and the 0.5m pre-wired cable provides sufficient length for connection into trailer rear wiring circuits without requiring extension cabling at the light unit. Fully sealed to IP67 against dust and water ingress, the 2559 is well suited to the exposed rear panel and under-body environments typical of trailer licence plate mounting positions. HELLA's five-year warranty provides long-term confidence for fleet operators, trailer manufacturers, and transport companies.

Features & Benefits

ADR 48/00 Compliant: Meets Australian Design Rule 48/00 for licence plate lamps on heavy vehicles, confirming the 2559 is road-legal for rear licence plate illumination on trucks and trailers operating on Australian public roads. Note: 2 units are required to achieve full ADR 48/00 compliance.

LED Light Technology: Maintenance-free LED illumination delivers a significantly longer operational lifespan than incandescent licence plate lamps, reducing the frequency of lamp replacements on large trailer fleets and minimising compliance risk from failed plate lights during roadside inspections.

Insulated Earth Circuit Compatible: Suitable for insulated earth wiring configurations where the trailer body is not used as the earth return path, ensuring compatibility with the isolated earth trailer electrical systems commonly specified on modern semi-trailers and refrigerated bodies.

IP67 Sealed Construction: Fully dust-tight and protected against temporary water immersion, providing robust moisture and ingress protection for the exposed rear panel and under-body mounting positions typical of trailer licence plate lighting installations.

9–33V Multivolt Input: Covers the full range of 12V and 24V heavy vehicle electrical systems in a single unit without requiring voltage-specific variants, simplifying procurement for mixed fleet and workshop environments.

Pre-Wired 0.5m Cable: Factory-fitted 0.5m cable provides sufficient length for connection into trailer rear wiring circuits without requiring extension cabling at the light unit, simplifying installation on rear panels and number plate brackets.

Compact 85 x 70mm Surface Mount Profile: Low-profile body installs neatly onto rear panels, trailer tailgates, and number plate brackets with a 40mm centre-to-centre mounting distance, maintaining a clean rear panel appearance.

HELLA 5-Year Warranty: Backed by HELLA's five-year warranty, providing long-term confidence for fleet operators, trailer manufacturers, and transport companies specifying quality lighting for extended service life.

Technical Specs

Compatible With / Goes Well With

The HELLA 2559 is suited to any 12V or 24V truck, trailer, or heavy commercial vehicle requiring ADR-compliant LED licence plate illumination. Primary applications include semi-trailers and B-trains, curtainsider and tautliner trailers, flatbed and drop-deck trailers, refrigerated and box body trailers, tipper bodies and tipping trailers, rigid trucks and bus bodies, car carriers, livestock trailers, and heavy plant transport trailers requiring rear number plate compliance.

Pairs well with the full HELLA truck and trailer lighting range including the 2431 Triple Jumbo-S combination lamp, 2430 Triple Jumbo-S stop/tail/indicator lamp, DuraLED COMBI-SR combination lamps, HELLA marker light packs including the 2051BULK, 2053BULK, 2054BULK, 2026BULK, and 2307BULK for a complete matched HELLA rear lighting solution, trailer wiring looms and junction boxes, and waterproof cable connectors and heat-shrink terminals for professional licence plate lamp installations.

Frequently Asked Questions

Why are 2 units required for ADR 48/00 compliance?

ADR 48/00 prescribes specific illumination coverage requirements for rear licence plate lighting on heavy vehicles, including minimum light output levels and coverage angles across the full plate area. A single lamp unit positioned on one side of the plate does not provide sufficient even illumination across the full plate width to satisfy these requirements. Two lights, positioned at each end of the plate, together provide the combined illumination coverage needed to achieve full ADR 48/00 compliance. Always purchase and fit two HELLA 2559 units when specifying for ADR-compliant licence plate illumination.

What does "insulated earth compatible" mean for this lamp?

Insulated earth circuits are trailer wiring configurations where the trailer body or chassis is not used as the electrical earth return path. Instead, a dedicated earth wire is run back through the wiring harness to the towing vehicle or a separate earth point. Many modern semi-trailers and refrigerated bodies specify insulated earth wiring to prevent corrosion, voltage drop, and earth continuity issues common in chassis-earth systems. The 2559's insulated earth compatibility ensures it operates correctly in both standard chassis-earth and insulated earth trailer wiring configurations.

What does ADR 48/00 compliance mean for licence plate lights?

ADR 48/00 is the Australian Design Rule governing licence plate lamps on vehicles, specifying the minimum illumination output, coverage area, and colour requirements needed to ensure the rear number plate is clearly readable at a prescribed distance. Compliance confirms the 2559 meets these legal requirements for use as a licence plate lamp on trucks and trailers operating on Australian public roads. Fitting non-compliant or failed licence plate lighting is a common defect identified during roadside heavy vehicle inspections.

Can the 2559 be used on both 12V and 24V trailer systems?

Yes. The 2559 operates across a 9–33V input range, making it fully compatible with both 12V light commercial vehicle electrical systems and standard 24V heavy truck and trailer systems. A single unit covers both voltage levels without requiring separate variants, making it suitable for workshop and fleet environments managing mixed 12V and 24V trailer fleets.

How is the 2559 installed on a trailer rear panel?

The 2559 uses a surface mount design with a 40mm centre-to-centre mounting distance, installed directly onto the rear panel, tailgate, or number plate bracket adjacent to the licence plate. The pre-wired 0.5m cable connects into the trailer's rear wiring circuit at the licence plate lamp feed. Two units should be positioned at each end of the number plate to achieve even illumination coverage across the full plate width for ADR 48/00 compliance. Waterproof connectors and heat-shrink terminals are recommended for a sealed, professional installation.