DUAL BEAM BULB STYLE WIRE CONFIGURATION GUIDE

Picture this: It's a dark and stormy night. You're driving home after a long day at work. The rain is pouring down, reducing visibility to almost zero. Your headlights, which seemed perfectly fine on a sunny day, now appear dim and ineffective. You squint, lean forward, trying to make out the road ahead, but it's a futile effort. The weak beams of light barely cut through the darkness, and you feel a knot of anxiety in your stomach. You're not just tired; you're scared. This is a situation far too many drivers find themselves in, and it's a situation you no longer have to tolerate.

How to Install H4 / 9003 LED Bulbs

The H4 halogen headlight bulb is extremely common on both cars and trucks. Here I have a Honda Civic headlight and on the backside there's a spring clip that holds an H4 halogen bulb in place. Also, here's a Toyota Tundra truck headlight with the same H4 bulb with a dust cover and a spring clip.

How to install 9004 / 9007 LED headlight Bulbs

If you're putting LED headlight bulbs in a vehicle that comes with 9,004 or 9,007 halogen headlights, you might have a little difficulty when it comes time to put the bulbs in the headlight. (Here's a huge list of 9004 and 9007 LED bulbs, but keep reading to learn which ones we recommend and how to install them.)

DISCLAIMER: In the United States, lamps, reflective devices, and associated equipment are regulated by the US Department of Transportation (DOT). Even though these types of LED lights can be used in place of an original halogen light bulb, it is not legal to use on vehicles registered for on-street use. This type of modification can only be done when used in a fog lamp application, dedicated off-road application, or in jurisdiction outside the USA where this is allowed. For more information on how to determine if this type of product is safe to use, and legal to use on public roadways in the USA, Click Here for a more detailed breakdown of compliance.