* The most accurate way is to look for the correct bulb information in your vehicle owners manual

* Check the bulb # on your stock bulb

* Search for your vehicle in Year/Make/Model search engine on our website. Search by Year, Make, Model or Sub-Model and Qualifier (type of headlamp/fog lamp) your vehicle came with. The search result will show you the LED bulb available for replacement for that vehicle. Read more here: How to find the right bulb # that goes into my vehicle?

CONCEPT SERIES:
* Recommended for city driving requiring improved visibility
* Features focused and controlled beam with zero glare
* Best for reflector style low beam headlights and fog lights

XTREME SERIES:
* Recommended for driving in off road or rural road condition where you need more light than you normally would need on a city road
* Best for projector style headlamps and for high beam headlights
* Not recommend for fog lights

Read more detailed here: Product Choice Guide Headlight and Fog Light

Some of the newer vehicles are equipped with CANbus and Pulse Width Modulation (PWM) systems. A decoder harness would be required to prevent LED bulb flickering, dashboard light out errors, bulb(s) stay illuminated after they are turned off or abnormally dim light output. If you are you converting your headlight and fog light to LED for these vehicles: Dodge, Chrysler, Jeep, VW, BMW, Audi or Mercedes Benz you will most likely need a pair of decoder harnesses. Read more about how to prepare for and solve these issues: How to decide if a decoder harness is needed or not?

In most cases the position of the diodes (LED chips) should always be in a side to side orientation. (E.G.) You should have one set facing at 3 o’clock and the other set facing at 9 o’clock. The spade shaft should be vertical and if there are two chips her side, the forward chip will be in the top, front, “up” position. Read more and see a picture here: LED Bulb Orientation Guide

One of the best resources for installers to find updated information on installation and technical data is in our SUPPORT CENTER.

There you will find the Installation Instructions and Trouble Shooting Guide

We also have the Knowledge Base that provides you with the latest technology developments in the LED lighting industry.