How to Build a DIY Bi-LED Projector Harness: Step-by-Step Guide

[@evolabsnetworks]

You're Legend!! I have ground switches and created the same harness wiring with correct power flow. and it works charm, i didnt found the 30sq050 diode in local market, but i found SM 5150 (should be 5200 but similer a lot) Diodes to work on, thank you very much for the video! you save my time, and cost!!!

[@bulgarianicedtea7897]

If your car has negative switched headlights, (Most Japanese cars from early 2000's) follow this guide guys! He does a really good job of explaining everything clearly and explains every part of the way. This is cheaper and better than any of the adapter harness's, which are really hard to find/determine which specific one you need for your car. I did this for a 2010 honda fit and most other Hondas from early 2000's would be the same. There's a comment in here about reducing the output slightly because of the diodes, I can say that I did notice it too but because the lights are so much better and brighter than the stock halogens it didn't matter to me. (Edit) Honda fits are positive switched headlights and this process will work fine you will just have to switch the orientation of the diodes.

[@bulgarianicedtea7897]

Another tip guys, keep your soldering iron hot and be as quick as you can with the diodes, these seem to bee extremely sturdy/ heavy duty but I have heard from other enthusiasts that they have ruined a couple of diodes by overheating them when soldering.

[@kesipi4465]

what led you use? i have h1 sized projector, and i wanna do my fit to

[@sayedzuber5882]

The project in this worked by luck only,because theoretically this guy is wrong but practically the circuit worked.The diodes are properly attatched in forward biased but they worked because of the ground pin switching of the headlights,he shows the wrong direction for working of Diodes.

[@josh1859]

ive been messing around with my 2nd gen crv for 2 weeks now. this was the fix i needed. thanks so much 🖤🖤

[@RobsDIY]

Amazing video exactly what I was after thank you, do you have a diagram at all? Rob

[@ivanbarton4475]

Thanks, this is thw video that I needed. I thought about using diodes but didn't know which ones to use.

[@ed4647]

Great info, ordered from your Amazon link. For HIDs you could probably run those diodes if you're powering ballasts with a relay harness, just wire them to the relay coil circuit

[@NextLevelNeo]

Theoretically yes. HIDs are usually only 35watt, maybe 50. The biggest concern i would have with HID is that initial surge of power to ignite the bulbs. You can try, worst case youll fry some components, maybe the diodes, but they are beefy diodes so they should be able to take it.

[@ed4647]

@@NextLevelNeo oh I wouldn't wire the diodes to ballast power. I'm talking about connecting diodes to the OEM low and high + leads like what's done with the LED projectors, but they'll be connected to the "trigger" circuit of the relay. Very low current is needed to power those circuits.

[@NextLevelNeo]

@ed4647 oh, so still using a relay, yea that would be totally fine

[@jaypeegrate5025]

Can you also do it in a 3inch projector where the driver is built in ?

[@NextLevelNeo]

@jaypeegrate5025 yes, the process is the same.

[@mkmkain8488]

hii good day man. what lamps did you uesd? thank you for the video

[@angerdark]

Hola soy de mexico no entiendo mucho ingles pero esta muy bien el video crees que esto funcione para instalar unos faros de un suzuki swift sport 2015 a un suzuki swift glx 2014 ya que el glsx trae H4 y los faros del sport traen xenon hid muchas gracias apreciaria mucho tu ayuda

[@headlightdesigngradacac]

I tryed that on a car that has projector low beam and a reflector high beam. When i installed bi led projector high beam works only if low beam is on so i used 10A10 diode so the high beam can work when low beam is off but diode is getting VERY hot.

[@NextLevelNeo]

On most cars like that the low beam stays on when the high beam is on and you won't need to use this style harness. What car is it?

[@davidgilson867]

So if it was positive switching, do I do this process but instead of negative do positive wires?

[@NextLevelNeo]

@@davidgilson867 correct, but you also have to flip the diodes 180 degrees. They are directional.

[@edwardsjohnson5387]

Ill hire you to help walk me through wiring my led projectors.

[@zenbvideos4770]

can i have a diagram for this? because my high beam wont turn on. thank you so much.

[@jaypeegrate5025]

Same problem here bro. The solenoid makes that ticking sound but there’s no light from the high beam.

[@gabrielpelayo198]

might be a positive trigger, this is a negative trigger, try to flip the orientation of the diode

[@stephenimsong3462]

so are the diodes so you don't ground both hi and low? could you omit the diodes if you want to run both hi/low at the same time all the time? i mean wouldn't the shutter do its job as far as not blinding people when in low beam? also i hear a 3d printer in the back

[@NextLevelNeo]

The diodes are a one way circuit. they prevent the signal from back feeding. If you want both hi and low all the time then you could just connect both high and low ground together. Without the diodes its just a basic power ground circuit, but this would open the shutter anytime the low beam is on, so you would be blinding people with the high beam anytime the projectors are on. You also need to consider each car varies. Some use ground switches some power. You will have to adjust the diode orientation and wire layout accordingly.

[@eriatlaimaciel]

cual es la matricula del diodo para buscarlo!

[@Nemesis74racer]

For cars with 9005/9006 connectors, does it require a ballast/harness/LED driver if I'm looking to install Bi-LED projectors? Can I not just rig it so it connects to the OEM connectors? I mean, if a ballast isn't required when running LED bulbs then why are they required for Bi-LED projecors?

[@gabrielpelayo198]

most of bi led projector ballasts are built in, so you don't need them anymore

[@gabrielpelayo198]

unless they came with, different scenario with hid

[@belalsays]

can i use 10A10 diode, I can't find here in india

[@rachdhaliwal9493]

Do you sell this harness on your website? I can’t seem to find it

[@NextLevelNeo]

@rachdhaliwal9493 we do not because there are many different variations. This is covered in the video which is a tutorial to show you how to make your own.

[@rachdhaliwal9493]

@@NextLevelNeojust finished this. Found out the hard way that you have to flip the orientation of the diode for the H4 with 2 positive switches. Thanks for the video! Btw ordered as much as I could through your affiliate link lol

[@ThangNguyen-xl2vk]

I did bi-led on my 2004 tacoma , low beam working fine but when turned on high beam was shut off. The harness will solve it ?

[@NextLevelNeo]

@@ThangNguyen-xl2vk these will absolutely work on the tacoma. Just keep in mind if they are power or ground triggers since that will change the way to make it. That is explained in the video.

[@ThangNguyen-xl2vk]

@@NextLevelNeo Hi , i just did the wiring harness but got no luck, low beam working but high beam still doesn’t work, tried messed up all day now , for sure the high beam blown fuse What i do now ? Flip the diode ( hi-beam )

[@kirshaw1980]

It is possible to get a diagram? Im a visual guys 😅

[@francobuitrago5657]

Hi there, very good video. I have a situation. I bought Sanvi biled laser projectors 3". The projector has 5 wires, 2+ and 2-, for the low and high beams. I guess the fifth wire (yellow) is for the laser, but, when I join that one with the high beams, the projector turns off and restart. I am testing the projectors with a 14v laptop adapter, could it be the reason of not getting the laser beam? Or does the wire need diode? The projectors uses canbus because of my car (Hyundai Elantra i35 2013). But, another situation is, when a I connect the canbus, nothing work even the projector, and when I connect laptop adapter directly I can see the low beam and the hight beam, less the laser because of the fifth wire. Any guidance or information will be welcome, thank in advance.

[@gabrielpelayo198]

hi bro did you find a solution for this? im having trouble with mine

[@sanwichg0dyt649]

i got a 09 ford focus and when i turned on the low beam they work but as u said in the vid the highbeam just turns the whole thing off will this fix it? just cant find anywhere for anything about the time of highbeam whether its negative or positive switched thanks

[@gabrielpelayo198]

you can check if you have a multimeter if its a negative trigger, the common will have a 12v constant power and if its positive trigger you need to turn on the switch

[@lain6578]

hey man, im really new when comes to this thing i have a scooter and i wanted to put this on as a headlight 2 of them actually. and i have no idea how does this work all i know is it needs a relay and again idk how that works. i need a 5 year old kind of explanation for that topic. thanks in advance!

[@NextLevelNeo]

@lain6578 small lights can be extremely difficult to work with, at times impossible. The goal of videos like this is to make it as easy to understand as possible but unfortunately some things just can't be that simple. You may need to reach out to a retrofitter to have a set made for you.

[@uptoolate65]

How different of a hookup is it if the system has power switches?

[@NextLevelNeo]

You just flip the diodes 180 degrees

[@JuggernautCorps]

Has anyone tried this on a early 1st gen sequoia or tundra? I cant seem to get it to work for my 01 Sequoia

[@quadrunnerjake]

I like to instead add a relay kit to change from switched ground to switched positive. Use the wires from your original plugs high and low to activate the relay and give you full power straight from your battery. Plus it takes all the load off your factory switch

[@arnoldrapthap7306]

Can i used a 6A diode

[@NextLevelNeo]

I use 30a diodes, using smaller ones may be result in a failure. here is a link to the parts i have been using for years with good results. amzn.to/3D2UGFc

[@arnoldrapthap7306]

Can i use r5000f.. as for my location the link you send is noy available to purchase it.

[@ESTroll]

Diodes are 30 amp 12v alright?

[@NextLevelNeo]

@ESTroll diodes come in many sizes. We used the ones at that link, results may vary with other sizes.

[@ryanchetty7188]

Is it possible to explain how to make a kit with 2 postive switches and one negative or does anyone know anyone who has?

[@NextLevelNeo]

@ryanchetty7188 a common ground and switched power just needs the diodes flipped 180 degrees. You run power through the diodes and ground goes straight to the projectors

[@patron1839]

No load resistors needed? I have an 03 ram and was told load resistors are needed to power the high beam.

[@NextLevelNeo]

On some cars you may need a canbus resistor. That will stimulate the load of a halogen bulb, if the car looks for that load and doesn't see it it may trigger a dash light or in some cases the lights won't work without it. I don't belive the 03 ram has that though, but i could be wrong. Either way that is separate from this harness.

[@patron1839]

Thank you. Yes my Ram requires it

[@jasonhughes9720]

Make a video like this for the 9007. I have an Srt-4 so that would be very useful for me. Thanks

[@NextLevelNeo]

The process is the same you just need to find a pinout for the 9007 to determine which pins do what. Even with a 9007 not all cars are the same.

[@NextLevelNeo]

kzbin.info/www/bejne/bpe7p2mrj5epZ5I&si=5Q7kLI6nyQ2uTiFS

[@jasonhughes9720]

That was the first video of yours I watched. Very informative. Thank you for making the video on it bc all others were videos after the Install was already done. How can I get in touch with you?

[@NextLevelNeo]

@jasonhughes9720 best way to contact us is through socials. There are links on our website www.nextlevelneo.com

[@Albertautolight]

This one is 2.5 inch?

[@NextLevelNeo]

@@Albertautolight correct

[@thehornstore]

Does this circuit harm the projector or any kind of an other issue?

[@NextLevelNeo]

If done properly, no, it will not harm the projector or the car.

[@thehornstore]

Do we need to put a relay or something for safety or this works fine without relay too ?

[@NextLevelNeo]

Generally no relay is necessary. But it would depend on the factory wiring gauge and wattage load of the projectors.

[@thehornstore]

@@NextLevelNeo okkk thanks

[@manuvt9258]

Sir please give me the wiring diagram

[@danmccarthy5247]

do you happen to make a harness for an 04 Honda Element using Gzminjie 3" ? It has a red, Black along with smaller white and yellow wires.... HELP!

[@NextLevelNeo]

We don't make harnesses but you can follow this guide to make your own.

[@danmccarthy5247]

great video although still unclear which wires go where on the 3 prong plug?? TY Dan@@NextLevelNeo

[@NextLevelNeo]

@@danmccarthy5247 that's because there are many different variations. You have to figure out what layout your car has. This is why we don't just make a harness and sell it. There are too many variations.

[@danmccarthy5247]

I understand thanks for the interesting video!!@@NextLevelNeo

[@ESTroll]

What is diode number sir?

[@NextLevelNeo]

There is a link in the video description

[@mavelstudio]

The number or amp of schotty diode

[@NextLevelNeo]

You can find a link to all the parts needed in the video description. Here is the link amzn.to/3D2UGFc

[@thevinylwrapper]

I tried for hours with my Hyundai Getz harness and only managed to burn the headlight fuse a few times. Can't figure out how it works. I tried from one positive to another (when you power the high beams you would also power the low beams, doing a jumper with the diode between both but didn't work) tried the way in this video and also didn't work. I ran out of ideas :(

[@NextLevelNeo]

@@thevinylwrapper what year Getz? Is that

[@thevinylwrapper]

@@NextLevelNeo 2007 buddy

[@NextLevelNeo]

@@thevinylwrapper does the headlight have 1 bulb for high and low beam with 3 wires on the plug inside the light?

[@thevinylwrapper]

@@NextLevelNeo yep

[@thevinylwrapper]

@@NextLevelNeo it's a normal H4 with the square type plug. With a multimeter I checked the pins and I got constant 12v on the side parallel ones and negative on the top centre pin. When you turn the switch on to low beam only one side has 12v and the top is still negative but if you flick the high beams the negative top dies, the left positive dies and the right pin now is the one with 12v but the other two pins are dead (in another words, unless I earth it directly to the car I can't get the high beams to close the circuit...) Weird :(

[@madoasful]

Using diodes is a simple and economical solution to power the low beam when the high beam is turned on, but I don't recommend it since it decays the power of the projector slightly, or in my case of using a biled low beam 70w the decay of intensity is too noticeable, I had to repeat all the wiring again and add a relay that positively feeds the low light with 70w. Generally positive battery

[@luisangelmancilla4601]

where did you add the relay?

[@madoasful]

@@luisangelmancilla4601 If your vehicle or motorcycle uses normal polarity (two positives and one negative), 85 and 86 would be negative and signal high light, 30 is low light projector and 87a is signal low beam, thus the relay comes (NC) permanently bonded 30 with 87A without the relay being active and thus gives you low beam, to pin 87 you connect high beam signal (85 or 86) making a bridge, high beam of the projector and that's it, when the relay is activated, it will activate high beam and through pin 30 it will power the low light of the projector, so you will not have to use diodes that cause voltage drop.

[@SpraytechLLC-wp9uz]

@@madoasful where do you connect hi beam positive wire in that setup? low beam positive goes to pin 30

[@madoasful]

@@SpraytechLLC-wp9uz low beam signal 87A, low beam proj 30, 86 negative and 85 is high beam signal, 87 high beam proj and make a connection between 85 and 87 with solder, when you turn on high beams, it will activate relay and high beam proj, and will connected between 87 and 30 the low beam proj

[@shanemc5136]

@@madoasful what if the polarity is two negative and one positive ?

[@mattiëgs369]

Dude you talk too slow