Questions tagged [headlight]

Questions about headlights, including main and dipped beams, dim-dip systems, etc

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16
votes
3answers
6k views

Do matching (left/right) lights often burn out within a short time period of each other? If so, why?

A couple of weeks ago, the right headlight in my car burnt out, so I went to the garage and had it fixed. When I picked up my car, their salesnerd told me to watch my left headlight, for "once one ...
12
votes
3answers
19k views

Car won't start, horn won't honk, headlights won't come on, what could cause this?

Vehicle: 2005 Honda Accord LX 2.4L FI DOHC 4cyl Symptoms Car wouldn't start today. In the past had occasionally had it hiccup before starting but that was the only indicator of problems. No ...
11
votes
3answers
10k views

How to upgrade a motorcycle battery to a bigger AH battery?

My motorcycle (honda CBF150) came with a 12V 3AH battery. I want to change the stock 35w headlight to a higher power one and connect them directly to the battery (the stock ones are not, and they ...
11
votes
1answer
16k views

What is this extra light on my headlights?

I own a 2006 Mazda 6 Luxury Sport in Australia, and the front headlights have 4 lights on them: It also has a fog light, which is not featured in this photo (but will be visible in later photos). I ...
10
votes
3answers
24k views

Why do LED running lights turn off while the turn signal is blinking?

I've noticed in several new vehicles the following scenario: Vehicle is traveling with LED day-time running lights around/adjacent to the headlights Vehicle activates turn signal indicator Vehicle ...
10
votes
1answer
1k views

Motorcycle Headlight Conversion

I've decided to install a new headlight on my bike. The current setup is two bulbs, one is on for low beam and both on for high beam, with two wires going out of each (h11?). Here is a short video of ...
9
votes
3answers
5k views

Realistically, how much can I expect to improve cloudy headlights by polishing?

The headlight lenses on my vehicle (a 2001 Ford F-150) are cloudy, and presumably as a result, the headlights are not terribly effective. (I could post a photo if you want.) I bought a polishing kit ...
9
votes
2answers
6k views

Why are H4 LED headlights not designed correctly?

In traditional halogen H4 bulbs the low beam filament (the one with the reflector/shield) point in a 180 degree field and the high beam has no shield and has a full 360 degree coverage. This is how ...
9
votes
1answer
386 views

How can I secure the power block for my LED headlights?

I purchased an LED low-beam conversion kit and installed it yesterday in my 2010 Forester. The installation was easy enough, other than having to move the battery to get enough space to fit my ...
8
votes
2answers
26k views

What is the difference between H7 and H7U bulbs?

Scenario I'm changing my left headlight bulb and it says it is a H7U one. What does the U marks? Possible solutions I searched a bit and found two possible solutions: Marks the shape of the bulb. The ...
8
votes
2answers
2k views

No low beams but do have high beams

I have a 2008 Toyota tundra that I replaced 1 headlight on thinking it was bad but then replaced it a second time and it worked fine for 1 day and the all of a sudden now I do not have any low beams ...
8
votes
1answer
165 views

Why would headlights stop working after turning over

I have a 2006 Pontiac G6. When I walk up to the vehicle and unlock it, the headlights turn on. After I get into the vehicle and turn it over, I cannot turn the headlights back on. Fog beams and turn ...
8
votes
2answers
14k views

Fixing headlight that keeps blowing fuses

My problem The 10 amp fuse for the right headlight on my 2001 Ford Escort keeps blowing so I presume I have a short to ground somewhere between the fuse block and headlight. What I have tried I ...
7
votes
4answers
16k views

Are expensive high-brightness 55W headlight bulbs worth the investment?

We've all seen them, bulbs advertised as brighter than the rest, sold under big names such as Philips or Osram. The flag is carried by Osram Night Breaker Unlimited and Philips X-treme Vision. ...
7
votes
3answers
135k views

Low beam headlights don't work, High beam headlights do

The vehicle is a 2003 Chevrolet Trailblazer. The low beams aren't working. High beams are. The fuse is perfectly fine (tested and swapped out). The bulbs are fine too. A mechanic told me it could be ...
7
votes
2answers
3k views

Is it a cause for concern if one headlight beam points lower than the other

I've always felt that my 2014 Lexus IS350 F-Sport does a poor job of illuminating the road ahead but ignored it assuming that it was more due to the car's low ride height than anything else. However,...
7
votes
4answers
6k views

Are there any (legal) ways to increase halogen headlight brightness?

My 2003 Opel Agila has H4 combined full and dipped beam headlight bulbs which are completely useless in the dark. It is really hard to see anything on the dipped beam. They do not seem to be very ...
7
votes
2answers
9k views

Sealing / effectively preserving restored headlights

There are many methods for polishing and restoring clouded, discolored headlights. My question is: once headlights have been polished and appear quite clear what sort of treatment effectively ...
7
votes
3answers
599 views

Head light bulbs

There are lots of head light bulbs manufacturers and types, but I've seen some claim to be able to provide 50% more light. Well, if the voltage that gets to the light bulb is always the same, for more ...
7
votes
1answer
336 views

Can I Mount auxiliary lights for Hero Honda Passion 2002 bike?

I am having a Hero Honda Passion 2002 model bike. The head light is very low and it works on engine power not on the battery, due to this riding bike in no light area with lots of ups and downs are ...
7
votes
1answer
770 views

Low beam not working in headlight

I have a 1999 Miata, i bought the car for 750$ as a project car. it had some body damage but i figured i would fix it. The car is mostly done now, but i have one major issue. The low beams in my ...
6
votes
4answers
8k views

Brightening dim headlights

The headlights on my car are very dim. When on the normal setting they only illuminate around 2-3 seconds down the road @ about 55mph. The high beams are brighter, but are still very dim. If I have my ...
6
votes
2answers
14k views

How important is bulb grease when changing low-beam or high-beam headlights?

Do I really need bulb grease when changing low-beam or high-beam?
6
votes
5answers
6k views

High Beam Indicator Problem

I have a situation where I'm doing wiring for the dashboard of a vehicle. For whatever reason, the turn signal/headlight switch on this vehicle outputs a 6 volt signal on the high beam wire when the ...
6
votes
2answers
4k views

Water droplets on inside of glass that covers headlight

I am seeing water droplets on inside of the glass that covers the headlights. They don't seem to go away. How can I fix this? I think I found the answer here: http://www.ehow.com/how_5035812_remove-...
6
votes
6answers
183k views

Low beams out high beams work

2005 Honda Accord. Replaced the fuses even though fuse looked good. Took it in to have bulbs replaced but still did nothing. Went on vacation for about 2 weeks, car was in the garage. Came back used ...
6
votes
2answers
1k views

My low beam only works when I take the high beam fuse out

I have a 2008 Honda Accord. The right low beam stopped working so I took the right high beam fuse out and the right low beam started working again but when I put the high beam fuse back and turned the ...
6
votes
1answer
307 views

1961 Chevy Apache - Low beam headlight won't work unless highs on

I have a 1961 Chevy Apache. It has the 4 headlight system. The dash lights wouldn't work right unless I wiggled the switch. I installed all new headlights, new bulbs in the dash, and a new ...
6
votes
1answer
600 views

How do I aim the headlights of a '95 Geo Prizm?

Two years ago, my grandfather gave us his old '95 Prizm when he bought a new car. A few weeks ago, I decided that the old headlight bulbs were too dim and I replaced them with new ones. The light ...
6
votes
2answers
2k views

Does repeated turning on/off Xenon HID headlights harm them?

I've got Xenon headlights and my car has a feature which automatically turns the headlights on at night. Currently I'm hesitant to use the auto-on feature because the headlights turn on when I start ...
6
votes
0answers
64 views

What are the brightest bulbs for projector headlamps? [duplicate]

I bought some projector headlights with Hi 55 watt bulbs in both the high and low beam modes. The low beam, which is the projector lens, isn't that bright. What other bulbs would be recommended for a ...
5
votes
4answers
5k views

New headlight lenses?

So my 97 Subaru Legacy has pretty dim headlights, and it drives me up the wall. I like nice, thorough illumination when I'm driving at night; being able to see really does wonders for confidence on ...
5
votes
3answers
47k views

Should I clearcoat my headlights after sanding and polishing them?

I had the typical problem of yellow oxidized opaque headlights on my car. So I went through the process of wet sanding and polishing them and now they're crystal clear. However, I've heard people ...
5
votes
1answer
193 views

Weird headlight issue!

I have a 1998 Honda Civic hatchback. So this is my issue: I turned on my lights... my driver side works but my passenger light is out. I hit switch for the high beam now the driver side headlight ...
5
votes
2answers
1k views

Does increasing headlight wattage affects motorcycle mileage

I ride Honda CD-100 SS, a 100cc motorcycle. Does increasing the wattage of the headlight bulb affect the mileage(fuel efficiency) of the motorcycle? If it does please explain how.
5
votes
2answers
3k views

Is it best to replace HID headlights in pairs?

I've heard that halogen headlights should be replaced in pairs. I've been wondering if the same is true of HID headlights. They are much more expensive, so I would like to avoid having to buy two of ...
5
votes
2answers
1k views

Low beams don't work but the high beams work in a 2002 Toyota Tacoma

I have a 2002 Toyota Tacoma Pre-Runner where my low beams don't work but my high beams do work. I've replaced the headlight bulbs and relay switch, and still the low beams don't work. Any ...
5
votes
2answers
2k views

What's an effective way to protect headlight lenses from fading?

I just ordered a pair of rather expensive LED headlights for my Jeep (KC Gravity Pro). These have a polycarb protective "lens" which means that it will eventually fade, turn yellow, get chipped by ...
5
votes
1answer
721 views

Parking Light Switch Engages Head Lights

On my 1996 Ford Explorer when I turn the knob for my headlights (3 positions, 1 for off, 2 for parking lights, 3 for headlights) to position 2 it turns on my headlights, when I turn to position 3 it ...
5
votes
1answer
535 views

Saturn Headlight Problem

I have a 2001 Saturn SL2 that is having a problem with one of its headlights. When I turn on the headlights, frequently one is not lighting. If I go to the front and give the lens a quick knock, it ...
5
votes
4answers
953 views

Ideas for rewiring headlights – convert from halogen with DRL to HID + LED DRL

I need some ideas. My 2009 Ford F150 pickup uses the same wire for daytime running lights (DRL) and "full" headlights. The stock setup was halogen bulbs with full brightness receiving 12 V and the DRL ...
5
votes
1answer
609 views

Replacement: How do I determine what wiring harness goes with my headlight?

I have a 2005 scion xB and am needing to replace the headlights and one of the wiring harnesses. I have seen on places like amazon and other sites for OE head lights, but I cannot seem to find ...
4
votes
4answers
2k views

Should I turn off my headlights while having the car run to “defrost” while I scratch ice off the windows?

My 2009 Ford Mondeo Clipper has a very nice "Max Heating" setting, where it both defrosts front and back windows, and sets the airco to max temperature, max fan speed. When I find my car windows ...
4
votes
3answers
3k views

High beams work, low beams do not. What is wrong with headlight?

I have a 2000 Jeep Wrangler TJ and the high beams work but the low beams don't. I replaced one of the relays under the hood and the high beams started working but the low beams still don't work. What ...
4
votes
2answers
5k views

Headlight sealant?

So a year ago the headlights on my ten year old car started going yellow and opaque. Ive often heard you can clear that up with toothpaste. So I gave it a shot and it worked perfectly. My ...
4
votes
2answers
707 views

Installing Xenon headlights in 2004 Chrysler Sebring

I was thinking about installing Xenon headlights in my car. I hate other drivers who have them because I go blind, but after riding in my friends car equipped with them, I'm more than ready to take ...
4
votes
1answer
769 views

Collision repair with Bondo and used parts

This year, one of my New Year's resolutions was to become more of a DIYer. I was in a fender bender a few weeks back (not my fault) and insurance just cut me a check for the repairs. This car is a ...
4
votes
2answers
45k views

What is the difference between a normal battery and a maintenance free battery in a 2 wheeler segment

What is the difference between a normal battery and maintenance free battery. Is a maintenance free battery really free of maintenance or just it requires less no of charge cycles. I currently own a ...
4
votes
2answers
1k views

Headlight washer blocked by ice

A few weeks ago I was coming back from Quebec and got caught in a terrible ice rain. My entire car was covered in roughly 1cm of ice. Most of Audi s4 have headlight washers that come out on random ...
4
votes
1answer
799 views

How to fix 2007 Mercedes SLK daytime running lights?

I've got a 2007 Mercedes-Benz SLK (R171). My daytime running lights have died, and I'm a little puzzled as to how to go about fixing them. The stock headlights have been replaced by aftermarket ...

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