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Xenoni.me
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BA9S bulbs
BA9S (T4W) is the bayonet fitting for position lights and dashboards on older vehicles. LED replacement in the same fitting.
Frequently asked questions
What is a BA9S (T4W) bulb and where is it used?
BA9S (T4W) is a small bayonet bulb with a 9 mm metal base and two pins. Used for position lights, plate and interior lights on older vehicles.
Is BA9S the same as T10?
No. Both are small bulbs for the same jobs, but BA9S has a metal bayonet base that twists and locks, while T10 has a glass wedge base that pushes in. They are not interchangeable without an adapter.
Why does the car report a "bulb out" error after fitting LED?
LED draws a fraction of the current of a halogen bulb, so the CANBUS system assumes the bulb is missing. The fix is an error canceller (resistor/decoder) wired inline with the bulb — the warning disappears. For T10 and festoon a CANBUS version of the bulb is usually enough.
What warranty do the bulbs carry?
All LED and xenon bulbs come with a 12-month warranty. If a bulb fails within that time we replace it, no fuss. Halogen bulbs are consumables — the warranty covers manufacturing defects only.
How do I pay and how long does delivery take?
Payment is cash on delivery and courier delivery across Montenegro takes 24–48 h from order confirmation. Xenoni.me imports directly and keeps stock on hand — no waiting for a supplier.
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