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18 votes

OEM LED tailights: white vs red LEDs under red plastic

My thoughts - A white LED can be used in multiple lamps in the same car, brakes, side, indicators, reverse lamps, so limiting the need for different stock. The assembly line will be simpler, so more ...
HandyHowie's user avatar
  • 25.4k
13 votes
Accepted

Why are VW tail light bulbs listed as 12W / 5W?

If it is a 21W/5W bulb, then it has 2 filaments of different brightness. The 5W filament is for the side/tail light for night driving. The 21W filament is for bright illumination when you press the ...
HandyHowie's user avatar
  • 25.4k
10 votes

How can I find out what car this set of tail lights came off of

Use Google lens on your phone; quite useful, allowing search by camera. I pointed it to the top image, and immediately got back a whole bunch of matching lights which appear to show the light is a ...
Chris's user avatar
  • 905
9 votes

OEM LED tailights: white vs red LEDs under red plastic

Quality tail lights use red LEDs for the red parts. White LEDs behind a color filter are very inefficient and typically used by cheap OEM parts (and fake OEM parts for that matter) which look good on ...
Dmitry Grigoryev's user avatar
9 votes

How can I find out what car this set of tail lights came off of

In addition to @Chris's great answer, if you type in the first code on the back of the light ("KS-HD323") and Google it ("KS-HD323 light") there are several hits that indicate it ...
gowenfawr's user avatar
  • 283
7 votes
Accepted

What's the difference between a taillight, taillight assembly, and taillight lens

Taillight - Generic term that could refer to any part of the assembly or the bulb. Context required. (i.e. "your taillight is cracked" = lens, "your taillight is out" = bulb, "insert the bulb into the ...
justinm410's user avatar
  • 1,732
7 votes
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What is the difference between an inner tail light assembly and an outer tail light assembly?

The tail lights on this car look like: (image source) The outer assembly is the one on the quarter panel: The inner assembly is the one on the trunk: I'm 99% sure of this, but note that it is the ...
Jason C's user avatar
  • 4,890
4 votes

Do I have to reprogram the ABS module to fix the ABS light on 528i BMW?

The ABS light is an indicator of an error caught by the ECU. It usually is an error for a defective ABS sensor or a related brake issue. It's difficult to tell what exactly it is without reading the ...
I have no idea what I'm doing's user avatar
4 votes

Rear lights on 2012 Nissan Rogue

As @fred_dot_u said, test to see if the lights will go off if you raise the brake pedal up with your hand/foot. If so, it's likely that your brake pedal switch needs to be adjusted, or less likely it ...
NitrusInc's user avatar
  • 763
4 votes

OEM LED tailights: white vs red LEDs under red plastic

Definitely red LEDs under a red (or white, for that matter) cover. This is how a (good) factory tail lights are made. Modern illuminating LEDs are more efficient when they are narrow-band color. E.g. ...
fraxinus's user avatar
  • 2,082
4 votes

OEM LED tailights: white vs red LEDs under red plastic

One part of the answer might be spectrum or gamut. There are govt specifications for the color of tail lights, SAE standards etc. It may be that it's easier to get the exact color needed in plastic ...
Jim Mack's user avatar
  • 169
4 votes
Accepted

Why don't manufacturers also produce "day-time running" tail lights?

AFAIK, DRLs were created for safety. I guess somehow cars weren't easy to see in the day time(?!), so they added always-on headlights. Okay sure, but I've almost always have been able to see a car ...
motosubatsu's user avatar
  • 10.1k
3 votes
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What was causing pulsing tail-lights?

One issue which may be happening is a problem with the alternator. To explain, I'll give a brief outline of how an alternator works. The alternator, as the name implies, creates alternating current (...
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes
Accepted

Stripped screw holding rear lamp assembly

You may be able to extract the screw by "drilling" it out with a left-handed drill bit running in reverse (counter clockwise). If you're in the US you can get a relatively inexpensive set from Harbor ...
dlu's user avatar
  • 14.5k
3 votes
Accepted

94 pontiac transport - direct shorting of blinker / brake light circuit - fuses blowing

Blowing a fuse is a pretty good indication of a short circuit. If you have a DMM (digital multi-meter) try some basic tests: With the fuse out, read between the prongs of the fuse socket and ground (...
dlu's user avatar
  • 14.5k
3 votes
Accepted

Fastener on 2017 VW Jetta won’t screw back in after replacing light bulbs

Have you damaged the start of the thread - easy to do on plastic threads. Dress the end of the thread with a small file and make sure it is clean, then it will normally go in.
Solar Mike's user avatar
  • 34.6k
3 votes
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LED strip on left inner tail light is out on my Audi and I'm not sure why

Since this lamp is mounted on the boot/trunk and it started out as an intermittent fault, it would suspect that the wires that take the power to the lamp have broken. The wires pass through a rubber ...
HandyHowie's user avatar
  • 25.4k
2 votes

Do I have to reprogram the ABS module to fix the ABS light on 528i BMW?

If this is an E39 or E60 chassis, you should be able to use GT1/DIS or INPA to probe the computer and figure out what is setting the ABS light. There are a bunch of possibilities that might cause ...
Zaid's user avatar
  • 39.2k
2 votes

'98 Ram 1500 - One tail light not working

Ok, time to get serious here :-) Do you have access to a test light or a DMM (or a volt meter of any sort)? It would be good to start by looking at the evidence – if you still have the old bulb, ...
dlu's user avatar
  • 14.5k
2 votes
Accepted

2009 Toyota Yaris Hathback - rear light change?

To remove the light assembly you remove the two bolts in your first picture. That white plastic thing in your second picture holds a metal stud that's threaded into the light assembly. You need to ...
Ben's user avatar
  • 10.7k
2 votes

What was the initial idea behind those "Blue Dot" tail lights from the '30s to '50s?

Having personally applied these to a few vehicles when I was younger, Steve's comment is accurate. In taillights with internal parabolic reflectors, the blue dots gave a very vivid magenta color to ...
Eric Hauenstein's user avatar
2 votes

What was the initial idea behind those "Blue Dot" tail lights from the '30s to '50s?

I had cars then and never remember anyone claiming blue dots were anything but "cool". I never had the money to spare for them , but I did worry some that some one might "borrow' the tail lights of my ...
blacksmith37's user avatar
  • 3,688
2 votes
Accepted

Dim LED high level brake light

LEDs are not all or nothing, your typical LED car light has several LEDs in it, so you can have partial failures if one or more go bad. LEDs last a very long time, however they do break early ...
GdD's user avatar
  • 17k
2 votes
Accepted

Rearlights and terminology

I checked the link you provided . I understood "Tail Lamp Glass R" to refer to the exterior housing assembly on the right hand side. The lamp base refers to the light socket itself which the light ...
Old_Fossil's user avatar
  • 3,962
2 votes
Accepted

Taillight Not Working Even with Bulb Replacement

Check the fuse. If it still good, you will have to check to make sure it has a good ground and that no wires are broken. Without a multimeter and schematics, its going to be harder to find your ...
Chuck's user avatar
  • 149
2 votes

What was the initial idea behind those "Blue Dot" tail lights from the '30s to '50s?

Just a thought. The most common form of color blindness is Red / Green. So, to a color blind person, red and green appear nearly the same. Adding the blue light would still be seen as a color by a ...
Roger S Topping's user avatar
2 votes

2009 Ford Fusion Tail Lights Outs

There isn't a serviceable relay for the tail lights, all exterior light controls are built into the Smart Junction Box. If your license plate lights and rear side marker lamps work, than take a look ...
Ben's user avatar
  • 10.7k
2 votes

Is there an easy fix for brake lights on my ‘06 Trailblazer?

The only items left to check are: 1) the switch : feed, then does it work when the pedal is moved 2) if switch works, then check the wire between front and rear - has it been cut or damaged and ...
Solar Mike's user avatar
  • 34.6k
2 votes

Identify tail light

This is a tail light from a 2001 F-150. (Good detective work, @juhist!) Look similar? Obviously, yours is a left light, whereas this one is a right light. Now for the confession. I didn't just ...
anonymous2's user avatar
  • 5,235
2 votes

Water on the left side of the trunk on a VW Golf mk4

It's most likely the tail light seal or the trunk seal. VW's are notorious for taking on water. You say the tail lights are no longer tightly sealed? That's probably the culprit. I think the only ...
David Watson's user avatar

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