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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW Passat Family (NMS and B7) TDIs (2012+)

VW Passat Family (NMS and B7) TDIs (2012+) Discussion area for the 2012+ Passat TDI (North American and rest of world versions versions). The North American model was previously codenamed NMS (New Midsize Sedan) and the version the rest of the world gets is sometimes referred to as B7.

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Old May 15th, 2012, 15:29   #1
compu_85
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Default Chinese Passat LED tail light retrofit

I have secured a set of Chinese market LED tail lights. I'm going to document the install in this thread. I'll start off by saying these will not be plug and play on a US market car.

So let's take a look at the fixtures:

No flash:


Flash:


Like the US lights they have side reflectors; however there is no side marker light.

The inner fixtures have the "eyebrow" of LEDs and a ring around the middle, the middle, and on the driver's side a rear fog light (LED). The outer fixtures are similar but have a turn signal bulb and reverse light bulb.

Pinouts
Outer:
(looking at the plug on the back of the fixture, key up)
Code:
5 3 1
6 4 2
Code:
1 - Eyebrow & Rim +
2 - Eyebrow, Rim, & Inner +
3 - LED Ground
4 - Turn Signal +
5 - Bulb Ground
6 - Reverse +
Inner:
(looking at the plug on the back of the fixture, key up)
Code:
3 1 
4 2
Code:
1 - Eyebrow & Rim +
2 - Ground
3 - Inner +
4 - Rear Fog + (N/C on Passenger side)
Here are pictures of the lights in operation!
Rear Fog:


Inner:


Eyebrow & Ring (inner is not lit)


Turn signal:


Reverse light:


Eyebrow + ring (inner is not lit):


And finally, all the LEDs on the outer fixture:


Additionally, here is some info on the connectors on the back of the fixtures:

Code:
Inner 3Pin:
US Car Harness: 7N0 972 703
Opposite: 5K0 972 713
Opposite Repair wire: 000 979 132 E (need 2)

Outer 4Pin:
US Car Harness: 7N0 972 704
Opposite: NONE :(

China outer:
Fixture Plug: 3C0 972 733
Harness Plug: 1J0 972 723
Harness Repair wire: 000 979 133 E

China Inner:
Fixture Plug: 1J0 972 732
Harness Plug: 1J0 972 722
Harness Repair wire: 000 979 133 E
I'm still gathering information on the proper wiring, and coding for the body control module. My intent is to make as few modifications / cuts to the car's wiring as possible. We'll see how feasible that is once I get some wiring diagrams.


--------------------


Condensing info from other posts:

VeeDub and I decided not to do amber turn signals. We wanted the lights set up like they were from the factory, but to have the inner portion of the fixture only come on when the fixture is bright. To do this I used a Curt Manufacturing 5620 trailer light controller. This required running a constant power wire to the trunk. I also ran a wire back for the rear fog light.

Here is how I ended up connecting the lights:



That arrangement duplicates the inner and outer fixtures. The center portion of the fixture only comes on when the light is bright. Additionally, I converted the amber turn signal into an additional brake light by installing a clear lamp in place of the amber one. Note that the original amber lamps are the type that have offset pins... I just cut off one of the pins on a 1156 clear lamp to make it fit.

That diagram has a few omissions. First it doesn't show the load resistors I had to install to simulate the bulbs that were on the inner fixtures. IIRC I used 50 ohm resistors. I used metal zip ties to attach them to the structure of the trunk lid which lets the trunk lid act as a heatsink, without that they would get too hot and burn out!

Second it doesn't show how I have the rear fog light connected up front. I connected the light switch to the BCM which got the light in the cluster working, and then tapped into that wire to drive a relay which sends power back to the fog light.

Some pictures from the install: http://forums.tdiclub.com/showpost.p...4&postcount=97

Hooked up and working:
http://www.youtube.com/watch?v=Su2KqrlpJ9E
https://www.youtube.com/watch?v=Udul36tZdyY

A final note: Some people have hooked up these lights so the inner fixtures are hooked right up to the original inner wires, and the same with the outers. This is dangerous and should not be attempted. Hooking the lights up in this way makes the inner fixtures run at brake light brightness all the time, which obscures the brake lights. Additionally, the inner portion of the fixture is only designed to be on when the light is "bright". Having it on all the time reduces the contract between the running light and brake light significantly. I initially had the inner fixtures running through resistors to dim them down. This was somewhat acceptable but it's so easy to install the trailer light controller I can only recommend doing this in that fashion.

Thanks,

-Jason
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Quote:
Originally Posted by BRUSSELS BELGIAN View Post
Maybe I should pay MYSELF to do bad work on my car!

Last edited by compu_85; November 25th, 2013 at 07:20.
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Old May 15th, 2012, 15:29   #2
compu_85
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So this is going to be abbreviated for now.

For now I didn't want to spend $100 on connectors and repair wires, so I made my adapters with spades from autozone:



You can see how I tinned the end of the wire, and also cut a bit of it out. There are only 6 strands left. This is the perfect size to go into the harness connector. I potted the wires to the connectors with some hot glue, if I need to change it later I can use a heat gun to remove it.

{continued later}

Last edited by compu_85; May 19th, 2012 at 17:50.
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Old May 15th, 2012, 15:29   #3
compu_85
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Reserved for possible more pictures.
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Old May 15th, 2012, 15:54   #4
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How much $$$ for those dealio's? $300? The dude selling those on vw whoretex is local to me, has family in Winnetka, CA, sister and Mom. me Likey!

Last edited by Niner; May 15th, 2012 at 18:53.
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Old May 15th, 2012, 16:20   #5
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I'm surprised it took you this long to start modding. What's it been, two weeks?
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Old May 15th, 2012, 16:29   #6
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Quote:
Originally Posted by IndigoBlueWagon View Post
I'm surprised it took you this long to start modding. What's it been, two weeks?
He was VCDS'ing tweeks the first free day he had off of work... in 3 or 4 days.
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Old May 16th, 2012, 08:22   #7
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Niner - double that $300 and then some. Just because they're Chinese doesn't mean they're cheap! These are the real deal VW tail lights.
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Old May 16th, 2012, 08:30   #8
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I drive so slow and frugally that everyone passes me... plus, you trained me to drive as much as possible without using the brakes. I rarely drive at night much any more... sad... no one would really get much of a chance to see my fancy LED rear tail lights.

Just saying... YMMV, I'm not much of a night owl these days. But they sure do look nice.
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Old May 16th, 2012, 08:35   #9
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Sounds like you should be driving with the hazard lights on! Depending on how you hook these up and code the module, you could have some wicked bright LED 4-way blinkers.
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Old May 16th, 2012, 08:37   #10
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That ain't cheap at all. Can't wait to see what this looks like on the car. I was just thinking last night that the Hyundai in front of me had nice tail lights.
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Old May 16th, 2012, 08:49   #11
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Quote:
Originally Posted by VeeDubTDI View Post
Sounds like you should be driving with the hazard lights on! Depending on how you hook these up and code the module, you could have some wicked bright LED 4-way blinkers.
Damnmit, about wrecked my screen with coffee and creamer! Not so early in the morning!
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Old May 19th, 2012, 12:58   #12
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Half and half.


Parking lights


Parking lights + brakes
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Old May 19th, 2012, 13:06   #13
compu_85
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The camera doesn't show how much brighter the LEDs are than the bulbs.

I'm not doing the full install for now... they just emulate the US lights. NO coding changes were required. How-to to follow.

-J
__________________
Present:
2012 Passat SE TDI DSG. 60,000 miles. Factory Alarm, LED tails, Memory Seat, HIDs 38/48 MPG.
99.5 Jetta "GLX" TDI. 295,000 miles. Half way there!!! Power Memory Seats, HIDs 11mm pump, BV39 Turbo, RCIII 36/47 MPG.
1991 Mercedes 350SDL 230,000 miles, 70,000 on engine. 18/27 MPG.
Past:
1988 Audi 5000S Quattro, 1992 Jetta ECOdiesel, 1991 Jetta ECOdiesel.

Check out the official TDIClub Chat Room!
Quote:
Originally Posted by BRUSSELS BELGIAN View Post
Maybe I should pay MYSELF to do bad work on my car!
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Old May 19th, 2012, 15:51   #14
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Never thought I say that. But Chinese lights are great.
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Old May 19th, 2012, 19:21   #15
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Headlights look just as good
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