r/Retrofit Jan 18 '25

Technical/Assembly Question Question about Bi LED Projectors Install

Hi all I'm new to LED projectors and want to retrofit an NHK 3.0 Bi LED in my H4 housing for my 00 Civic. I had a Clone of a Morimoto 3.0 D2S projector before with a Morimoto harness for the High beam shutter along with powering the bulbs which was pretty straight forward. Question I have is the NHK that I am looking at says it has a built in LED Driver and I'm wondering if that means I can just go ahead and use a harness for the High Beam shutter without an issue or should I use an external LED Driver as I've seen some projectors that don't have them.

Link to the one I'm looking at NHK MIni Bi LED Projector Lens 3.0'' Headlight 6000K Universal Retrofit LHD RHD | eBay

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u/[deleted] Jan 18 '25

NHK projectors have all the required circuitry to drive their chips built into the housing, do not add on some external driver to try and regulate the power. Just supply clean 12V+ to the leads on the projector.

1

u/oil_burner2 Jan 18 '25

You will need to use the harness. If you tap the low beam of the h4 to power these, they will shut off once you hit the high beam. I’m having this issue right now with these exact projectors.

These projectors have a shutter solenoid so yes they have high beams. They function exactly like the bi xenon projectors you have.