Similarly to this question, the replacement tail/brake combined lights I bought from Halfords for a Chevrolet Lacetti advised that the bulbs be replaced in pairs. They're dual filament conventional bulbs. Is there any advantage or reason to replace this type of bulbs in pairs other than bolstering the manufacturer's profits? I've only replaced the broken one so far and they look equally bright to me. Each bulb have some sort of life time expectancy so if two lamps are installed at the same time and one fails after a long period of time you can deduce that the other can be close to failure as well so for security some people and manufacturers ($$$$) recommend replacing both at the same time. The thing is that there is no rule since a lot of factors come to play when estimating the life expectancy of the bulb, just to mention a few. Length of wiring (left and right side) some times indicator or other lights on the car have a different wire lengths. Quality of the bulb two bulbs will never be the same even if the same quality check is applied to both, the filaments are sooooo delicate that what looks ok to the naked eye may be far from the reality.

Condition of the bulb receptor Bad contact, water, over heating, poor maintenance,etc, etc. If one goes off buy two, replace one, and keep the other in the car just in case it is needed.Older filaments in headlights can be noticeably duller. If you are OCD, it might benefit you. Typically when one bulb goes out, the others that were replaced at the same time are probably near their end of life. I don't replace things that aren't broken. Otherwise, it's just more money for the parts store.Quilt Covers Adairs My mom's Prius HID bulb died (under warranty) so she took it in to get it replaced. Prom Dresses Boynton BeachThe dealer replaced one of the bulbs and it was a completely different color than the original. Homes For Sale Lutz Lake Fern Road

I finally bought her two new bulbs from Amazon and replaced them for her because it was so bothersome. In a situation like that it is definitely worth it to replace both at the same time to make sure that they are the same color and brightness. In your situation - if both lights (new and old) are the same color and brightness there really is no reason to replace them at the same time, especially if one light broke and did not burn out on its own. If you have two headlights that are the same age and one burns out from usage then you can bet the other one is going to go sometime soon. As a rule of thumb, I always keep an extra in my car - just in case! If one headlight dies and gets replaced then the new lamp is usually brighter then the old one. This bothers me and I usually replace both. I keep the working old lamp and the next time a lamp fails I replace it with that, resulting in two slightly dimmed headlights.Browse other questions tagged lights tail-lights or ask your own question.

T8 LED Vaporproof Light ... The LED Lighting Quiz Knuckle-Mount LED Flood ... LED Lighting Must-Haves ... LED Turn Signals Blinking Too Fast (Hyperflashing)Car, Truck, and RV, DIY & How Tos, Learning Center | Added on: July 11, 2009 Ok had to replace the headlight bulbs on the kia yet again just changed them not more than 7 months ago and another one done blowed so i made a video showing you how to remove the headlights from a kia optima total job takes about 5 minutes to replace everything on both sides well enjoy ► ► ► ► ► ► ► ► ► ► ► ► ► ► ► ► ► ► ► ► ►LED Daytime Running Light Glossary So you just bought a new set of LED DRL for your vehicle! Don't be scared by all the wiring because all of the wires are labeled with tags that show you where each of the wires will be tapped to! Not sure what the wiring tags and labels mean? This LED daytime running light wiring glossary explains it all. LED DRL Buying Guide Love LED daytime running lights, but not sure where to start?

Check out the iJDMTOY buying guide and browse all of the available direct fit LED daytime running lights for all sorts of vehicles. General Guide to Install LED Daytime Running Lights This concept will apply for most of our direct fit LED daytime running light kits. For any LED DRL kit without the installation guide, you can use this one as referral: 1) Take off/remove the stock fog lamp bezel covers 2) Replace back with the LED daytime lights 3) connect the wirings... How to Install LED DRL on Mazda3 This installation guide is for the 2010-2013 2nd generation Mazda3 on how to install the exact fit LED daytime running lamps. Simply remove the bumper, insert the LED lamp to the bumper's lower opening and mount it from the back... How to Install Kia K5 LED DRL These high power LED daytime running lights come standard in Korea for Kia K5. Unfortunately, most Kia Optima in the United States have fog lights only. Because of this, we have made these OEM style LED daytime running lights to give your Optima a genuine KDM look...

How to Install LED DRL on Volkswagen CC Here we will show you step by step on how to install these fog lamp bezel replacement LED daytime running lights for the 2009-2012 Volkswagen CC. For the CC, there is a screw you need to first release before you can pop/remove the stock fog lamp bezel... How to Install Honda Accord LED DRL Like the Premium OEM Honda Accord LED daytime running light look? Now you can get the same with just a fraction of the cost by adding our LED modules to replace the stock parking lights in order to achieve this same LED DRL look. The installation is not that difficult, but we recommend you remove the headlamp so you can easily insert the LED... How to Install LED DRL on Scion FR-S Scion FR-S is so popular nowadays and so are the aftermarket accessories for this car! Here we will show you how to install the Scion FR-S OEM fit LED daytime running lamp. As you can see this installation is super easy, it's perfect for a Sunday afternoon Father & Son project...