Your car's interior lights are dim, yellow, and dying every few months. You've swapped the bulb three times this year. Stop. This Jaycar retrofit kit drops straight into your existing T10, 211, or BA9S socket — no rewiring, no cutting. Twenty-four SMD LEDs on a small board with 3M adhesive foam backing. Peel, stick, clip the base in. Done in under five minutes. Brighter light, longer life, and it's $20.80 RRP instead of another cheap bulb that dies by Christmas. Fits cars, caravans, boats — anywhere you've got one of those three socket types. Add to cart and your next interior light swap takes five minutes, not an hour