How to Upgrade BMW E90 Halogen Headlights to LEDs?

Part and tools:

Replacement Process:

1, You want to remove the dust cover at the bottom of the wheel arch in order to get access to your headlight bulbs in the back. You need to do to remove clips and the backing cover to get access to direct bulbs.

2, Remove the clip and remove the backing cover to get access to the bulb.

3, Once you have two covers removed from your headlights, you want to take a whole shot and drill a substantial amount of the cover so that your LED fan can have a space to breathe.

4, Once you have drilled a hole on the dust cover, you want to remove your old H7 bulb.

As you can see, this is the difference between the old H7 and then you see the LED headlight has the built-in fan.

5, When installing, the first thing you’d want to do is you want to insert the h7 socket. You’d insert that and fix the socket into your headlights.

6, Once you have the socket installed, you want to insert your LED bulbs, it’s easy just by pushing it right into the unit itself.

Be sure to have your individual LED bulbs installed at which the LEDs are facing side to side, the added LED bulb itself must be facing straight, it should not be side to side.

7, Once you have your bulb correctly installed, you can close up and reinsert your covers.

8, And we just finish the replacement. There’s no modification to do, juts a simple replacement.


One thing should be mentioned:

You have to drill through the protective dust cover just to allow for the fan to have spacing to go through, but you can choose to put a plastic sealer or you can put an extra bit of anything that you can do. Just cover up the hole that you made will be all perfect, then no water will get into the headlight itself.

I haven’t had any major issues with this method. I have had the lenses getting cloudy as the lense got cold and the led bulbs do not generate as much heat as the regular halogen bulbs. Drilling through the backing cover is the only way for clearance for the bulb. I then covered it up with a piece of vinyl on each side. This prevents water getting in and any moisture forming. A more permanent solution is to shorten an aerosol spray paint cap and use a sealing silicon

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