newbeetle18t
Posts: 5
Joined: Mon Jan 30, 2017 11:43 am
Delivery Date: 01 Jan 2017
Leaf Number: 310315

Retrofit of OEM LED Headlights

Sun Oct 14, 2018 5:16 pm

I am in the process of swapping out the original halogen headlamps from my 2015 S with factory LED headlamps.

I have actively followed several threads where the swap was briefly mentioned and 2 forum members did the swap. Unfortunately I have sent private messages to both Andrejun and ty1 and have not received a response from either of them.

I have managed to removed the stock headlight and now need assistance splicing the wiring harness from the halogen onto the LED one.

Thanks for any information in advance.

cwerdna
Posts: 8282
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: Retrofit of OEM LED Headlights

Sun Oct 14, 2018 6:03 pm

Nobody's obligated to help in private or publicly. I guess they don't visit here much any more, esp. Andrejun who hasn't been here in over a year (at least while logged in).

memberlist.php?mode=viewprofile&u=17928 currently says
"Last active: Mon Oct 02, 2017 7:02 am"

memberlist.php?mode=viewprofile&u=13922 currently says
"Last active: Tue Apr 03, 2018 12:27 pm".

Hopefully someone else can chime in.

'13 Leaf SV w/premium package (owned)
'13 Leaf SV w/QC + LED & premium packages (lease over, car returned)
'06 Prius

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

newbeetle18t
Posts: 5
Joined: Mon Jan 30, 2017 11:43 am
Delivery Date: 01 Jan 2017
Leaf Number: 310315

Re: Retrofit of OEM LED Headlights

Mon Oct 15, 2018 12:32 pm

cwerdna wrote:Nobody's obligated to help in private or publicly. I guess they don't visit here much any more, esp. Andrejun who hasn't been here in over a year (at least while logged in).

memberlist.php?mode=viewprofile&u=17928 currently says
"Last active: Mon Oct 02, 2017 7:02 am"

memberlist.php?mode=viewprofile&u=13922 currently says
"Last active: Tue Apr 03, 2018 12:27 pm".

Hopefully someone else can chime in.


Yes I completely understand just wanted to let others know I have researched the topic and was looking for another party who may also have done the swap or has knowledge of the the 2 different wiring harnesses.

RonDawg
Posts: 2873
Joined: Sat Jan 12, 2013 3:46 am
Delivery Date: 11 Jan 2013
Leaf Number: 027089
Location: SoCal

Re: Retrofit of OEM LED Headlights

Mon Oct 15, 2018 2:35 pm

Have you tried simply swapping out the bulbs for something else?

While the OEM LED headlights are superior to the halogen ones in low beam, the high beams are still terrible.
Blue Ocean 2012 Leaf SV, lost that 1st bar at 34 months/26,435 miles. Lease returned 2 months later. Final LeafStat figures: 225 Gids, 17.44 kWH, SOC 91.89%, SOH 82.36%, 69.49% HX, 54.57 Ahr, battery temp 61.8 F.
Now driving a 2015 VW eGolf SEL.

powersurge
Posts: 1096
Joined: Wed Oct 21, 2015 10:24 am
Delivery Date: 06 Dec 2014
Location: Long Island, NY

Re: Retrofit of OEM LED Headlights

Tue Oct 16, 2018 4:31 am

I would say to look at the differences and similarities of the connectors and the wires (colors). The LED cannot be that much different than the halogens..... The have positive, negative, and neutral::???? you can play around with + and - with a 12v set of leads and match them.. You can probably get a wiring diagram from a Nissan service manual for the different models to easily match them up...

THEN......

IF IT WERE DOING THIS.... I would do this with the LEAST DESTRUCTIVE manner possible. I would NOT CUT any wires. I would get two of the headlight plugs.... 1 - A plug of the old Halogen headlight (which would plug into the car wiring of my car) and 2 - A plug which would plug into the NEW LED headlight (or the same as the donor car's original wiring plug) .

Then you can make a pigtail which will directly plug in the new headlight into the your old car. Non-destructive, and instantly reversible to use your old Halogens back in the future.....

newbeetle18t
Posts: 5
Joined: Mon Jan 30, 2017 11:43 am
Delivery Date: 01 Jan 2017
Leaf Number: 310315

Re: Retrofit of OEM LED Headlights

Tue Oct 16, 2018 11:05 am

powersurge wrote:IF IT WERE DOING THIS.... I would do this with the LEAST DESTRUCTIVE manner possible. I would NOT CUT any wires. I would get two of the headlight plugs.... 1 - A plug of the old Halogen headlight (which would plug into the car wiring of my car) and 2 - A plug which would plug into the NEW LED headlight (or the same as the donor car's original wiring plug) .

Then you can make a pigtail which will directly plug in the new headlight into the your old car. Non-destructive, and instantly reversible to use your old Halogens back in the future.....


My thoughts exactly but the ballast for the LEDs is throwing me for a loop as the power feeds into the ballast before exiting and feeding the 2 LED bulbs. In a previous thread it was mentioned that with the LEDs when the high beams are on both lights are lit but on a halogen car like mine only the high beam is on. In this instance it he used power off of the parking lights to enable both LEDs to remain lit.

So what it confusing me is there is only 2 wires going in to the ballast , it appears 1 is power and the other is a ground? So how do I run 2 different power wires into the ballast?

In regard to the pigtail not sure if I could order these from Nissan and the harnesses are not accessible unless the headlights are removed so trying get them at a junk yard would be an issue .

Let me know if you think looking at photos of the wiring harnesses would be helpful to attach to this thread and I will post them.

Thanks for your insight.

goldbrick
Posts: 250
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Colorado front range

Re: Retrofit of OEM LED Headlights

Tue Oct 16, 2018 1:11 pm

LED lights shouldn't need ballasts. HID (high-intensity discharge) lights use ballasts but LED's should need nothing but a current regulator. Halogens require a (nominal) 12V voltage source and operate like any incandescent light. LED's require a specified amount of current to operate. HID's require a ballast to ignite/start.

newbeetle18t
Posts: 5
Joined: Mon Jan 30, 2017 11:43 am
Delivery Date: 01 Jan 2017
Leaf Number: 310315

Re: Retrofit of OEM LED Headlights

Tue Oct 16, 2018 2:19 pm

goldbrick wrote:LED lights shouldn't need ballasts. HID (high-intensity discharge) lights use ballasts but LED's should need nothing but a current regulator. Halogens require a (nominal) 12V voltage source and operate like any incandescent light. LED's require a specified amount of current to operate. HID's require a ballast to ignite/start.


Thanks for the clarification. It looked similar to the ballast in another car I owned with HID headlights.

I guess now I understand why people say that the high beams are not that great. It is not connected to the voltage regulator, so I assume it is a halogen bulb?

I did more investigating inside of the LED headlight and found several additional wires inside that did not appear to connect to a harness or a bulb.

I removed the 3 screws holding the regulator in and discovered wires coming out of the back. These went to the smaller (lower) bulb LED and also appeared to attach to a internal component with a large heat sink.

So the 4 wires connected to the top of the regulator are most likely ground and power. And those out the bottom are the regulated current that feed the LED bulb.

Check out the link to photos below :

https://photos.app.goo.gl/FrhgrvENkjtUNemZA

powersurge
Posts: 1096
Joined: Wed Oct 21, 2015 10:24 am
Delivery Date: 06 Dec 2014
Location: Long Island, NY

Re: Retrofit of OEM LED Headlights

Wed Oct 17, 2018 6:29 am

Good luck with the experiment... Looks like the LEDs need 26 volts? That may be an issue.

tesleaf
Posts: 64
Joined: Fri Nov 10, 2017 9:44 pm
Delivery Date: 24 Oct 2018
Location: Vancouver, WA

Re: Retrofit of OEM LED Headlights

Fri Oct 26, 2018 11:02 pm

Did you get them installed?
2015 Leaf S w/ QC . I have Leaf Spy Pro.

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