Laser headlight retrofit

hxsvn · 03-12-2021, 04:33 AM

Hi all,

I want to retrofit laser headlights on my G20 M340i. I have the high beam assist. Im looking to buy used headlights as they are cheaper. Would it simply be a plug and play fit? Some are also missing 'ballast', what is that, and can I use the ones from my current headlights?

OM3RTA · 03-13-2021, 10:52 AM

From previous discussions on the forum it seems yes...to a degree it looks like the wiring is near identical and you would need to code them to work properly.
The 'ballast' if I'm not mistaken is the actual control unit for the lights and I couldn't say with any degree of certainty if your old would work with new but I'd err on the side of not.

xenon · 03-13-2021, 11:15 AM

Ballast is a misnomer- this was the unit in HID lights (xenon lights) that generated the high-tension voltage. LED lights do not have these and seems to be used as the name for the control unit.

stu14t · 03-15-2021, 04:26 AM

I suspect the Laser control units will be different to the standard LED and will need to be coded in to the car.

Probably a bit of VO coding to change 5A4 to whatever Lasers are plus other Esys witchcraft

kamer7 · 03-15-2021, 09:26 AM

What about going from Base LED headlamps to 'Laserlight' or 'LED headlights with extended features'? I don't have even High Beam Assist but in my car there's traffic signs recognition and adaptive cruise control so there should already be some kind of camera capable of adding that feature. Anything else besides lamps and their modules I need to get for that retrofit?

03-12-2021, 04:33 AM	#1
hxsvn New Member 4 Rep 20 Posts Drives: BMW M340i xdrive Join Date: Oct 2020 Location: London iTrader: (0)	Laser headlight retrofit Hi all, I want to retrofit laser headlights on my G20 M340i. I have the high beam assist. Im looking to buy used headlights as they are cheaper. Would it simply be a plug and play fit? Some are also missing 'ballast', what is that, and can I use the ones from my current headlights?
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03-13-2021, 10:52 AM	#2
OM3RTA Major 394 Rep 1,041 Posts Drives: 330i M Sport, Audi A3 2.0 TDI Join Date: Jan 2020 Location: Scotland iTrader: (0)	From previous discussions on the forum it seems yes...to a degree it looks like the wiring is near identical and you would need to code them to work properly. The 'ballast' if I'm not mistaken is the actual control unit for the lights and I couldn't say with any degree of certainty if your old would work with new but I'd err on the side of not.
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03-13-2021, 11:15 AM	#3
xenon Major General 1420 Rep 8,114 Posts Drives: 2021 G21 330i M-Sport Join Date: Jun 2008 Location: Coventry iTrader: (0)	Ballast is a misnomer- this was the unit in HID lights (xenon lights) that generated the high-tension voltage. LED lights do not have these and seems to be used as the name for the control unit.
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03-15-2021, 04:26 AM	#4
stu14t Major 451 Rep 1,201 Posts Drives: 330i MSport Pro Join Date: Mar 2013 Location: Scotland iTrader: (0)	I suspect the Laser control units will be different to the standard LED and will need to be coded in to the car. Probably a bit of VO coding to change 5A4 to whatever Lasers are plus other Esys witchcraft __________________ Current - 2021 G20 330i M Sport+ Gone - 2017 F30 335d M Sport + in San Marino Blue Gone - 2015 F30 LCI 320d M Sport+ Step Auto Gone - 2012 F30 320 ED Gone - 2011 E87 118d
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03-15-2021, 09:26 AM	#5
kamer7 New Member 0 Rep 6 Posts Drives: G21 330i, G01 25d Join Date: Mar 2021 Location: Poland iTrader: (0)	What about going from Base LED headlamps to 'Laserlight' or 'LED headlights with extended features'? I don't have even High Beam Assist but in my car there's traffic signs recognition and adaptive cruise control so there should already be some kind of camera capable of adding that feature. Anything else besides lamps and their modules I need to get for that retrofit?
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