Interior lighting package

Mazda part number 4100-78-827AA is the interior lighting package; a set of four LED bulbs to enhance the vehicle’s interior with white modern lighting, whilst also reducing energy consumption.

I fitted this accessory kit to my CX-3 today, and much prefer the colour temperature of the LEDs over the original incandescent festoon bulbs. The LED bulbs are marked ‘CE Canbus’, and measure 31mm tip to tip. They are a direct swap for the original bulbs in the front and rear overhead lights, and the luggage compartment light.

Fitting is very straightforward. You simply prise off the clear plastic lenses from the lights with a small flat headed screwdriver, and pull the old bulb out from between the metal contacts. Installation of the new LED bulbs is the reverse procedure. See pages 6-53 and 6-54 of the CX-3 Owners Manual.

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2 Responses

  1. Rosario says:

    Hi Julian, nice to stumble on your blog, I think i will be checking it often from now on.
    I am also a CX-3 owner and willing to switch all my interior lights to LED. You can confirm that 31mm LED bulbs will fit? Is 31 mm measured from top to top? More specifically, I am referring to the two bulbs right above the Mzd connect on the front of the car. I tried to measure those bulbs and they were shorter than 31mm…
    Thank you in advance for your reply and sorry for any bad spelling.


    • Julian says:

      Hi Rosario, thanks for your comment. I have more articles planned for the blog, and hope to find the spare time to write them soon.

      I measured the length of the original interior festoon bulbs to be 31mm from the pointed tip of one end to the tip at the other end.

      The bulbs you’re referring to and those for the rear of the cabin and boot (trunk) lights are all the same length. I used the genuine Mazda LED upgrade kit.