What LED bulbs fit a BT-50?

A BT-50 uses T10 wedge bulbs (W5W/194/168) for the map, door, footwell and license plate lights, and festoon bulbs for the dome and trunk. AutoKitShop stocks 12 BT-50 kits covering 2006–2021, each supplied with the correct adapters so no separate bulbs are needed.

Does a BT-50 need CANbus error-free LEDs?

Most BT-50 vehicles built after 2005 monitor the interior lighting circuit and will show a bulb-failure warning with a plain LED. A CANbus error-free kit includes the resistor or decoder that mimics the original load, so the warning stays off. Older vehicles with a simple on/off circuit run fine on standard LEDs.

How long does it take to install BT-50 interior LED lights?

Allow 15 to 30 minutes. Switch the light off, pry the lens off with a plastic trim tool, pull the old bulb, push in the LED and test it before refitting the lens. If a bulb does not light, rotate it 180 degrees — LEDs are polarity sensitive. No wiring, coding or tools beyond a trim tool are required.

Will BT-50 interior LEDs cause flickering?

Not with an error-free kit. Flickering on a BT-50 is normally caused by the body control module pulsing the circuit to test for a failed bulb. The built-in load resistor in an error-free kit absorbs that pulse. If you already own a non-CANbus kit, adding a decoder resolves it.

What colour temperature is best for a BT-50?

White (6000K) matches the factory LED signature on late-model BT-50 cars and looks the most OEM. Warm white (3000K) suits older cabins with filament-era trim. Ice blue and purple are aesthetic choices. Colour is selected per bulb, so you can keep the dome white and tint the footwells.

Mazda BT-50 LED Interior Light Installation Troubleshooting

June 21, 2026

While installing the AutoKitShop LED kit in your Mazda BT-50 is straightforward, a few common issues can crop up.

What Is a BT-50 Interior LED Light Kit?

A BT-50 interior LED light kit is a set of direct-replacement bulbs that swap into the factory dome, map, reading, vanity, trunk, glove-box and footwell sockets without cutting or rewiring. (chassis codes BT50) AutoKitShop lists 12 BT-50 LED kits covering model years 2006 to 2021. Kits for this model run from 8-piece to 10-piece sets. Each bulb is rated at 300 lumens and roughly 3x the brightness of the original incandescent lamp, at a fraction of the current draw, with a 50,000-hour service life. Kits are supplied as complete sets with the correct socket adapters, so nothing needs to be ordered separately. If a bulb does not light on first fit, rotate it 180 degrees, because LEDs are polarity sensitive. Colour options are white (6000K), ice blue, warm white (3000K) and purple.

What Should You Know About LED Does Not Light Up?

Remove the bulb, rotate it 180 degrees, and reinsert. LEDs are polarity-sensitive. This solves 95% of dead bulb issues.

Will LED Bulbs Trigger a Warning Light on a BT-50?

Check that the bulb is fully seated. Loose connections cause intermittent contact. The AutoKitShop bulbs are designed to work with PWM dimming circuits.