Narva 87542 Interior Light LED 10 - 30V 306mm

Narva 87542 Interior Light LED 10 - 30V 306mm

High-output cool white LED interior light delivering 38 lux at 2 metres from a slim 306 x 33 x 12mm rigid body, with IP66 sealed construction, 10–30V universal input, and 5-year warranty — the longest and highest-output unit in the Narva rigid interior light series, purpose-built for caravans, motorhomes, trucks, marine vessels, and utility vehicle interior lighting applications requiring maximum coverage from a single strip.

Product Overview

The Narva 87542 is the largest and highest-output unit in the Narva rigid LED interior light series, stepping up from the 178mm 87541 to a 306mm body that delivers double the light output at 38 lux at 2 metres. This makes the 87542 the preferred choice for wide interior spaces where a single strip needs to cover the full width of a caravan dinette, motorhome galley, truck sleeper cab overhead, or marine cabin without requiring multiple shorter units. Producing 38 lux at 2 metres in cool white from a body just 12mm deep, the 87542 delivers a bright, practical interior light level suited to reading, meal preparation, work tasks, and general interior ambient lighting across the widest range of 12V and 24V off-road, touring, and commercial vehicle applications. The rigid aluminium housing provides superior impact resistance and thermal performance compared to plastic-bodied alternatives, maintaining structural integrity and consistent optical alignment in the vibration-exposed environments of off-road caravans, camper trailers, and work vehicles. IP66 ingress protection extends suitability beyond pure interior use to external utility applications including underbonnet lighting, toolbox illumination, and step lighting in moisture-exposed environments. At 0.33A at 12V and 0.17A at 24V, the 87542 draws more current than the shorter 87540-12 and 87541 units in proportion to its greater output, but remains a low-draw light source compared to incandescent interior lighting alternatives. The 10–30V input covers the full span of 12V and 24V DC electrical systems, and Narva's 5-year warranty provides long-term confidence for automotive, marine, and caravan installations.

Features & Benefits

38 Lux at 2 Metres Output: Delivers a measured 38 lux at 2 metres, double the output of the 178mm 87541, providing a bright and practical interior illumination level for reading, meal preparation, work tasks, and general ambient lighting across wide interior spaces in caravans, motorhomes, and truck cabs.

306mm Wide Coverage: The extended 306mm body provides wide-area light spread from a single unit, covering full-width caravan dinette tables, motorhome galley benches, truck sleeper cab overheads, and marine cabin ceilings without requiring multiple shorter strips side by side.

Cool White Light Output: Cool white colour temperature produces a crisp, bright light output that maximises perceived brightness and clarity for task-oriented interior lighting across caravans, motorhomes, work vehicle cabs, and marine cabin applications.

Rigid Aluminium Housing: The aluminium body provides superior impact resistance, structural rigidity, and thermal performance compared to plastic-bodied interior strip alternatives, maintaining performance and alignment in vibration-exposed off-road, truck, and marine environments.

IP66 Ingress Protection: Fully dust-tight and protected against powerful water jets from any direction, extending the 87542's suitability beyond pure interior use to external utility applications including underbonnet, toolbox, step, and exterior courtesy lighting in moisture-exposed environments.

306 x 33 x 12mm Slim Profile: Despite the extended 306mm length, the body remains just 12mm deep, installing neatly onto interior panels, overhead mounting surfaces, and cabinet undersides without intrusive protrusion.

10–30V Universal Input: Compatible with both 12V and 24V DC electrical systems in a single unit, covering passenger vehicles, caravans, motorhomes, trucks, heavy equipment, and marine vessels without requiring separate voltage variants.

Rigid Construction: The rigid format maintains consistent LED orientation and mounting alignment on flat surfaces, providing stable, vibration-resistant installation suited to the movement and road vibration experienced by caravans and off-road vehicles.

Narva 5-Year Warranty: Backed by Narva's 5-year warranty, providing long-term confidence for automotive, caravan, marine, and utility vehicle interior lighting applications.

Technical Specs

Compatible With / Goes Well With

The Narva 87542 is suited to any 12V or 24V vehicle, vessel, or caravan requiring high-output wide-coverage LED interior or utility lighting. Primary applications include caravan and motorhome full-width overhead and panel lighting, camper trailer and rooftop tent interior lighting requiring maximum single-strip output, truck and commercial vehicle sleeper cab overhead lighting, marine cabin and saloon lighting, wide toolbox and equipment compartment illumination, 4WD and dual-cab ute canopy interior lighting, and underbonnet or engine bay inspection lighting requiring greater coverage area.

Pairs well with the Narva 87541 178mm interior light for multi-zone installations combining full-width and supplementary accent lighting, the Narva 87540-12 114mm strip for smaller accent or spot zones, Narva interior light switches and dimmers for lighting control, in-line fuse holders and wiring accessories for auxiliary circuit protection, and surface-mount brackets and adhesive mounting tape for flexible installation options.

Frequently Asked Questions

How does the 87542 compare to the Narva 87541 178mm interior light?

Both lights share the same IP66 rating, cool white output, rigid format, 10–30V input, and 5-year warranty. The 87542 is the longer 306mm variant delivering 38 lux at 2m and drawing 0.33A at 12V, while the 87541 is the 178mm variant delivering 19 lux at 2m and drawing 0.09A at 12V. The 87542 provides double the light output and wider area coverage from a single unit, making it the preferred choice for wide interior spaces and full-width overhead lighting. The 87541 suits narrower panels and applications where the lower current draw of the shorter unit is preferable.

What does 38 lux at 2 metres mean in practical terms?

Lux is a measurement of illuminance — the amount of light falling on a surface per unit area. 38 lux at 2 metres means the 87542 produces 38 lux of illumination on a surface 2 metres from the light. This is a comfortable interior ambient and task lighting level for caravan and motorhome interiors, marine cabins, and truck cabs — bright enough for reading, meal preparation, and general tasks while remaining a pleasant, non-harsh interior atmosphere. For higher output requirements, multiple units can be used in parallel to increase total lux output across larger spaces.

What does IP66 mean and is the 87542 suitable for wet or outdoor applications?

IP66 certifies the 87542 is fully dust-tight and protected against powerful water jets directed from any angle. This makes it suitable for external utility applications including underbonnet lighting, step lighting, and exterior courtesy lighting in rain and road spray environments. Note that IP66 does not certify submersion resistance — for applications requiring water immersion protection, an IP67 or IP68 rated product would be required.

Can multiple 87542 units be run from a single switch circuit?

Yes. At 0.33A per unit at 12V, multiple 87542 lights can be connected in parallel on a single switch circuit. For example, three units draw just under 1A total at 12V, remaining well within the capacity of a standard automotive switch and light-duty wiring. For larger multi-unit installations, ensure wiring and fusing are appropriately sized for the total connected load and consider a relay for switch circuits controlling more than five to six units simultaneously.

What mounting options are available for the 87542?

The rigid aluminium body is suited to direct surface mounting using small self-tapping screws through the housing ends onto interior panels, overhead surfaces, and cabinet undersides. Double-sided adhesive tape can be used for light-duty interior applications where drilling is not preferred. For overhead and inverted mounting in caravans and marine cabins, screw mounting is recommended to ensure the unit remains secure under road vibration and vessel movement. The 306mm length provides multiple screw fixing points for a stable, distributed mounting arrangement.