How to: Retrofit 2014-2018 Mazda3 Halogen Headlight to Bi Xenon Projector

In this post, I will do step by step to tell you how to retrofit 2014-2018 Mazda3 halogen headlight to bi xenon projector. Just follow with me and you can do it by yourself. Thing is not that difficult. And let’s begin.

 

We will start off by removing all the screws on the Mazda3 headlight housing. You can either use a Phillips head screwdriver or a little impact.

After these screws have done, we’re going to remove the wiring harness. The harness itself needs to come off first. It’s a little nub,

especially on this one here, the harness has to come off first.

Next up we’re going to put it in the oven, preheat your oven to 230 degrees. Once it is done, place the headlight inside and place it directly on the rack. There’s no need for a cookie tray or  anything, plastic one melts at 2:30, not for how long I’m putting in. Don’t touch the hot rack, it’s hot; don’t let the headlight touch it either, seal it up set a timer for 13 to 15 minutes and then we have a rest and come back later.

For now, headlights are out of the oven, optional gloves, they’re hot above two hundred thirty degrees. These tools will be used in the next operation. Flat head at bare minimum,

this little breaker bar guy works really.

And these suckers with reverse pliers.

Let us start on the inside and work our way around. Be very mindful of these tabs.

They are like up top there, and we’re in.

Next step I’m going to remove the old projector out with three screws Phillips.

And we’re going to grab the new projector. so it is 99 % drop in, the only thing we have to do is to trim two hold on the left center and right center.

I will use sanding bit or grinding bit and will grind it down.

We’ve trimmed off the inside pieces and now it fits in perfectly.

Next, we are going to make the dust cap first, you will drill four holes here and two for the bi-xenon wires two for the d2s wires, pre-drilling it just makes it easier pass it through.

Next, finding the two yellow grommets, it is a little bit difficult to pass them through cause it’s a little tough. I suggest using some pliers to help to pull it through. Try and push the yellow grommet through with it.

Next, finding the two yellow grommets, it is a little bit difficult to pass them through cause it’s a little tough. I suggest using some pliers to help to pull it through. Try and push the yellow grommet through with it.

Then we’re going to take the d2s bulb, insert it, and we take this cap and slide it off. Yes, it is a little more difficult, trying not to put my head directly in the way.

Next, we will be able to access wire in there so we will pull those out, slide the cap right down on. We can do this after the headlight has been sealed.

Now we will go stick it back in the oven at 230 degrees for about 12 to 15 minutes. Rest and come back later.

So lastly, we’re going to feed these in. They will be ready to plug into the high beam splitters. It does not matter which side they go on, it’s not sensitive to the positive-negative as long as it receives voltage. It is okay. the headlights are back out at the oven, so I’ve gone ahead and clamp them down multiple locations use as many as we want, and I’ve added the screws back into all these locations. Now we’re just going wait for it to harden and then we’re going to go back out and install it on the car.

Installing on the car is very simple, we going to take this ballast and we connect them with the HL Evan harness you’re going to plug it directly into the OEM wiring and install the harness on your car and then you’re done.

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