Alfa 159 TI Full LED Conversion – Interior Guide

This post covers the interior lighting made to my 2008 Romeo TI.For the exterior conversion , click here. This modification is worth completing as a single project as the results are a dramatic change in the mood of the interior of the car at night. The original filament bulbs are very yellow so choosing a good LED that puts out a colour range around 6000K changes the feel of the car to a much cooler, relaxed and crisp feel.The parts required to complete this conversion are as follows:

  • 7 x w5w / 501 Type bulbs (all CANBUS) (Puddles, Maps & Glove box)
  • 2 x 42mm FESTOON type bulbs (CANBUS) (Cabin & Boot)

Expected Cost: £35-40

Required Tools: One Bojo trim removal kit “Bojo Bars” (£30) …or a few screwdrivers and a steady hand!

I personally used two of these Festoon type bulbs for the courtesy lights in the front of the car and the boot and four of these 501 type bulbs for the rest of the courtesy & map lights in the front and rear of the car. These were a good balance of brightness and colour, and matched well as I did not want to flood-light the car at night. For the puddle lights and the glove-box I wanted more light so I chose these 501 type bulbs that provided much more light output than the other ones, as these were areas of the conversion that would benefit from more light output.

It is important to understand that the bulbs you use must be CANBUS ready. What this means is that the LEDs have additional resistance added to them that simulates the load of a normal filament bulb so that the internal computers do not think that the bulbs are blown. This is due to the fact that modern put a small electrical current across the lighting circuits to check that the bulb has not blown, and to report an error if it has, so you know to fix it. While the interior lights don’t report the errors, the circuit still has a small electrical current across it, so if you do not use CANBUS friendly bulbs you will find that some of the lights never turn off and instead stay illuminated (all be it quite dimly) forever!

Here are some images taken from an iPhone, which explains why they look very dark. Its not actually dark at all!


The following expanding links give you the specific guides for each light unit to perform this upgrade yourself:

6 Replies to “Alfa 159 TI Full LED Conversion – Interior Guide”

  1. Thanks for this useful guide! I’m working on my SW right now. Please note that for a SW you need 2 more Festoon bulbs for the sides of the boot. 42 mm won’t fit, you will need 36 mm festoon bulbs. Greetings from Holland!

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