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Retrofitted head light beam adjustment. HOWTO


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Hi fellow Supra fans.


So I swapped my jspec pre-FL headlight units a few years ago. And the EU-spec lights have got electric motors for the beam adjustment. But as my car originally didn’t come with this option I was missing all the wiring and the adjustment button on the dashboard.

I thought it was a shame to not be able to use this function in the car, so I went along and retrofitted this.


Originally this button will be on the dash if you have this originally. I didn’t have this so bought my own button which you’ll see later.

https://dl.dropboxusercontent.com/u/3472574/BeamAdjustment/%24_57 (1).JPG


First of all I cut the original connectors of the head light units.

https://dl.dropboxusercontent.com/u/3472574/BeamAdjustment/IMG_3794 (Medium).JPG


And replaced them with my own.

https://dl.dropboxusercontent.com/u/3472574/BeamAdjustment/IMG_3795 (Medium).JPG


Next I ran all the wiring for it as hidden as possible through the fender and through the firewall https://dl.dropboxusercontent.com/u/3472574/BeamAdjustment/IMG_3797 (Medium).JPG


https://dl.dropboxusercontent.com/u/3472574/BeamAdjustment/IMG_3799 (Medium).JPG


Then had to drill a hole for the button on the dash and fit that with connectors so the panel can stil be easily removed.

Note that i've fitted the red (12V) wire with a fuse connector. I've yet to calculate what would be an appropriate fuse, but for now its an 8A that came with the fuse-holder. I'd recommend putting in something much smaller (like 0,5 or 1 Amp fuse). I'm sure the electric motors don't use alot of power.

https://dl.dropboxusercontent.com/u/3472574/BeamAdjustment/IMG_3801 (Medium).JPG


https://dl.dropboxusercontent.com/u/3472574/BeamAdjustment/IMG_3802 (Medium).JPG


https://dl.dropboxusercontent.com/u/3472574/BeamAdjustment/IMG_3803 (Medium).JPG


This is the result at the head light unit.

https://dl.dropboxusercontent.com/u/3472574/BeamAdjustment/IMG_3806 (Medium).JPG


Here is a quick clip of the system operated.:cool:


This is the schedule I found online, for if anyone else wants a go at it.

For a 12v/GND source I’ve used the 12V input of the dash dimmer switch which is right there in the same dashboard panel anyway.





Edited by DJT88
Trying to fix pictures (see edit history)
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  • 11 months later...
  • 4 years later...
On 4/10/2015 at 10:05 AM, DJT88 said:

Thanks guys! just thought I'd document this as it might be something worth doing when you've changed from headlights without this option to ones that do.

HI, Don't happen to have those pictures available to upload?  Quite fancy doing this myself. Cheers

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