$33.90
Free delivery · 7–14 days
T10 LED Bulbs — 10-Pack Cold White 194 W5W Super BrightLED Festoon Bulb – Bright White Interior Car Light, Exact
+3
About this itemAll characteristics
Typeautomotive lighting
Available Lengths31mm, 36mm, 39mm, 41mm
Body Height12mm (±0.2mm)
End Cap Diameter8mm
Rated Voltage12V DC / 24V DC
Colour Temperature6000K (Pure White)
From the seller
Direct replacement LED festoon bulbs for car interior dome, reading, and trunk lights. Four exact‑fit sizes (31‑41mm) deliver crisp 6000K white light, built with a ribbed aluminium heat sink for…
Read the full descriptionDescription
Direct replacement LED festoon bulbs for car interior dome, reading, and trunk lights. Four exact‑fit sizes (31‑41mm) deliver crisp 6000K white light, built with a ribbed aluminium heat sink for…
Direct replacement LED bulbs for all car interior dome and reading lights with multiple size options
Solves
- dim or failing interior lights
- frequent bulb replacement
- energy drain from halogen bulbs
- inconsistent brightness across vehicle
Swap Dim, Yellow Halogen for Bright White LED Interior Light
Precision‑engineered festoon bulbs in four exact‑fit sizes — crisp, reliable light for every corner of your vehicle, from dome to trunk.
Three Reasons They Outperform Generic LEDs
Exact‑Fit Sizes, Not Guesses
Most festoon bulbs come in one ambiguous size that ‘might fit.’ We offer four precision lengths so you get a snap‑tight connection first time. Pull the old bulb, measure it, and pick the matching option — no adaptors, no filing.
Built for the Long Haul
Cheap LEDs overheat and flicker within months. The ribbed aluminium core pulls heat away from the chipset, keeping things cool even during extended use — a detail most only find in pricier OEM upgrades.
One Colour, Every Corner
Symmetrical LED placement and a colour temperature locked at pure white means your dome, reading and trunk lights finally match. No more mix‑and‑match yellow/blue tints.
The Numbers That Matter for Your Dash
- 4exact fit options (31‑41mm)
- 12/24 Vworks on any vehicle
- 6000Kpure white, no blue tint
- Al + Ceramicribbed heat sink, steel caps
Install in 3 Simple Steps
- 1Extract the old bulb
Use a plastic trim tool or your fingernail to carefully pry out the lens cover. Gently pull the old festoon bulb straight out by its metal caps — it’s held by spring pressure, no twisting needed.
- 2Match your size
Measure the old bulb’s length with a ruler or compare it to the diagram on the package. Choose the nearest size from the four options: 31, 36, 39 or 41mm.
- 3Snap in the LED
Push the new bulb firmly into the socket until the caps seat against the contacts. Replace the lens cover and switch on the light. If it doesn’t illuminate, flip the bulb — polarity only matters on some vehicles.
From Flickering Amber to Modern, Clear Illumination
The Let‑Down of Standard Bulbs
OEM halogens cast a sickly yellow glow that fades year after year. They sap battery power, burn out without warning, and leave you fumbling for a dropped phone or a lost earpiece in the dark.
A Purpose‑Built Replacement
Each CNSUNNYLIGHT bulb starts with a ceramic‑white core and polished steel end caps. The ribbed aluminium heat sink keeps LEDs cool for years of consistent output, and the symmetrical chip layout spreads light evenly — no hot spots.
A Cabin That Welcomes You
Pop in the right size, and your dome, reading, or trunk light transforms. The crisp 6000K white makes upholstery colours pop, maps readable, and your morning commute feel just a little more put‑together.
Why Spend £5 More?
| This Bulb | Generic LED | Halogen | |
|---|---|---|---|
| Light Output | Bright, even | Bright but spotty | Dim, yellow |
| Lifespan | 50,000+ hours | Unknown | ~1,000 hours |
| Heat Management | Ribbed aluminium sink | Minimal or none | Glass envelope gets hot |
| Size Accuracy | 4 exact lengths | Usually ‘fits most’ | OEM exact |
| Colour Match | Yes (all 6000K) | Often mismatched | Uniform yellow |
Characteristics
Main
Categoryautomotive lighting
Option4 options
Details
Available Lengths31mm, 36mm, 39mm, 41mm
Body Height12mm (±0.2mm)
End Cap Diameter8mm
Rated Voltage12V DC / 24V DC
Colour Temperature6000K (Pure White)
LED TypeSMD 5050 / 5630 (size‑dependent)
Heat Sink MaterialRibbed aluminium alloy
End Cap MaterialPolished stainless steel
Reviews
Questions and answers
How do I know which size I need?
w
Wanelo · seller
Pop out your current festoon bulb and measure its length in millimetres from end‑cap tip to tip. This product is available in 31mm, 36mm, 39mm and 41mm. If you measure 38mm, the 39mm version will fit with a tiny bit of flex in the socket contacts — that’s normal.
Is this brighter than my original halogen?
w
Wanelo · seller
Yes — and the improvement is immediately visible. Our LEDs produce a pure 6000K white light that fills the cabin evenly. You’ll be able to read a map, find dropped items, or simply enjoy a more modern interior. On a side‑by‑side test with a standard 5W halogen, the LED provides noticeably more usable illumination.
Will these cause an error on the dashboard or flicker?
w
Wanelo · seller
This bulb is a standard festoon, not a CANBUS‑specific unit. Most vehicles without bulb‑out monitoring will see no errors. If your car has a bulb‑check system (common on European models), it may register the lower resistance as a ‘bulb out’ and flash a warning. In that case, add a load resistor. Flickering is not a defect — it’s usually a signal incompatibility, also fixable with a resistor or by choosing our CANBUS‑ready version when available.
How long will these last?
w
Wanelo · seller
LEDs are rated for tens of thousands of hours — far longer than any halogen. The ribbed aluminium heat sink is the key: it manages temperature so the chipset doesn’t degrade early. In practical terms, you’ll likely change vehicles before you need to replace one.
Are they worth the higher price compared to cheap no‑name LEDs?
w
Wanelo · seller
The difference is in the heat sink, the steel end caps, and the quality control. Cheap LEDs often flicker, change colour, or stop working after a few months. This bulb is built to stay bright and consistent for years, so you don’t end up back at the auto parts store. Consider it a one‑and‑done upgrade.
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