Posts Tagged ‘DRL Module’

Are you wondering how to use the HID Harness with your V-HIDS headlight conversion kit? I want to cover a cool feature that comes standard with every “single beam” V-HIDS kit we offer. This feature allows for quick plug-n-play installation of the HID Harness and other accessories your car may need.

H11 HID bulb and Input Adapter Jumper

The feature that I am talking about is what I refer to as the “Input Adapter Jumper”. The picture to the right shows the jumper wires as they come in the kit, attached to the HID bulb. They are routed through a rubber grommet with the HID bulbs wiring. This is so you can route them into your headlight housing and keep a water tight seal if you have sealed-back headlights. This input adapter jumper has as a male 9006 connector on one end and the specific end of the bulb type of the kit on the other end, this one happens to be an H11. This allows for a direct connection from your cars headlight socket to the input connector of the HID harness.

Connection of the Adapter to the HID Harness

Input Connector of the HID Harness

The HID Harness has a single input connector shown here. It is a female 9006 plug. This is where you connect the adapter to the HID Harness. Here is another bonus to this setup. If your car is equipped with a warning light that indicates you have a burnt out headlight and you need to install an inline capacitor or inline resistor you’re in luck. These parts come with male and female 9006 connectors too. So if you need any additional parts to get your V-HIDS kit working they will plug right into this setup without any modification to your cars wiring harness.



Here we see the 9006_INLINE_RES,   INLINE_CAP_ADAPT and the 9006_DRL_MODULE. Each one is designed for different applications. I will be covering these applications in the future. In the following pictures you can see how easy it is to install them inline. Using the 9006 style connectors allows adding these parts to this setup to be quick and easy. A complete wiring schematic for the HID_HARNESS is at the bottom of the page too.

9006_INLINE_RES Installed

If you do have any application questions feel free to ask. You can email me direct at:


Thanks for reading, James the

Here are links to other articles that contain additional information on some of these products:



9006_DRL_MODULE Installed

Installation Diagram For HID_HARNESS

Installation Diagram For HID_HARNESS

Do you own a Lexus IS? Do you have questions about upgrading your DRL to V-LEDS? Are you confused about what is needed and cannot find a straight answer? I am going to go over all the information that is necessary when purchasing our IS DRL KIT.

Lets cover the history behind V-LEDS’ solution(s) for upgrading this cars DRL. This should answer some questions. It started when the owner of V-LEDS purchased his 2007 IS 350. Naturally he wanted to change every bulb in the car to V-LEDS. When it came time to change the DRL to LED he found an interesting problem. First he found that the LEDs would flicker. Second he noticed that they were not as bright as they should be. We received reports from other Lexus owners who had the same problem.

What causes the flicker?  The flickering on the LEDs is caused by “pulses” of power on the DRL circuit. The DRL system in the 2nd GEN IS runs at a fluctuating voltage ranging from +3 volts to +6 volts. It basically cycles up and down at a fast rate. This prolongs the life of a Halogen bulb running at low voltage. The filament of the halogen bulb does not show this as flickering; it regulates this cycling into about a +4.5 volt constant voltage. Our LEDs on the other hand react quickly enough to changes in voltage. As the LEDs react to the changing voltage they look like they are flickering.

Why aren’t they bright? Because the DRL system operates at such a low voltage the LEDs will not be as bright as they should be. The LEDs need to have at least +12 volts to be as bright as we advertise them to be.

V-LEDS came up with a solution for the problems we experienced. The solution is our DRL Module. This part fixed the problem. It made for an easy plug and play installation that required no modification to the car or headlight housing. This, combined with a pair of 9005 LED Bulbs was the first IS DRL KIT we offered. (*please note that the original IS DRL KIT package is no longer available)

Fast forward to now. Im sure you have questions as to why we sell a relay harness with the new IS DRL KIT. As a company, V-LEDS is committed to engineering the brightest and highest quality LEDs available on the market. The LEDs that were included with the first IS DRL KIT have been replaced with a new, brighter design. After bringing this product to market we found that it was overloading the DRL circuit when used with our DRL Module. It would blow the DRL fuse immediately when connected. The solution for this is the LED Relay Harness. It requires more work, but it is a better, reliable solution. We have put this kit together so you have an option of upgrading the lights on your car. The big red flag that seems to get waived is that you have to drill a hole in the bulb cover of your headlight assembly. Yes this is true, and I understand the concerns of dust and moisture being able to get into the light housing. Before we completed the installation (drilling of the hole) in our car here we drove around for a long time without the covers on at all. We live in Washington state, it rains here, a lot, and we did not have any moisture problems.

Here are some photos from the installation process that show what is needed for drilling and wire routing.

I drilled a 3/8″ hole in the cover. I chose this location as it was not directly behind the bulb. I took this into consideration as it could interfere with the fitment of the wires after they are routed into the headlight housing. I made the hole in the exact spot on both sides as the headlight  assemblies are symmetrical mirrors of each other.

The plug ends need to be removed to route the wires through the cover. Question for you: Do you think the kit should come with the plugs removed so that they just need to be installed after this step? Inserting the pins into the plugs is straight forward. It would make it easier to not have to remove the pins first.

This is the drivers side after the wire has been routed through the cover and the pins installed into the plug ends. The wire loom fits very snug in the hole and should repel moisture and dust.

This is the passenger side. Note that there are 4 wires on this side. One connector is the same as the drivers side. The other connector is the input trigger for the relay in the harness. This is where the DRL Module will be connected. The cars DRL plug will plug into the input of the DRL Module. The DRL Module will stay inside the housing behind the cover.

Finish up the remaining connections of the Relay harness. (Battery and Ground) and secure the wiring looms with the factory harnesses. The LED Relay Harness was designed with longer wire lengths and a single ground connector for ease of installation.

I do see a need for improvement in regards to an installation guide. We are working on an instructional video that will show the entire installation process. The video will not be ready in the immediate future, but its coming soon. Also we are in the process of finding a different solution to routing the wires through the bulb cover. Currently this kit is not a quick and easy dunk of an install, but if you give yourself adequate time where you are not rushed it will go smoothly. We are working on improving/simplifying some of the steps required to get this done. If you have suggestions on an area that you feel can be improved, please send me an email directly at I take all opinions into consideration when working on special projects like this.

This can also be used to power an HID kit for DRL and High beams as the Relay harness can handle the power draw of  the ballasts.

Thanks for taking the time to read this over. I hope it answers any questions you may have about upgrading your DRLs. Feel free to leave a comment or email me.

James, the

There has been some confusion about our DRL module. Its primary use, when to use it, and exactly what it does. I will explain some the features and specifications of the DRL_MODULE. First and foremost: THIS IS NOT AN ADD-ON DRL KIT.

Where does the term DRL come from? DRL is the abbreviated version of  Daytime Running Lights. It is a safety feature that has been implemented by vehicle manufacturers. This feature makes your vehicle visible during the daylight hours so other drivers can see you. Manufacturers use different ways to get the same result. Our DRL Module is designed with the specific purpose of replacing the Halogen Bulbs of a single element, low voltage High Beam DRL or a single element low voltage dedicated DRL system with LEDs from V-LEDS.

We have 2 versions of this product. A 9006 version and a 9005 version. They do exactly the same thing, the only difference is the output connector. Each style will only plug into the specified base of one of our LEDs. So a 9006_DRL_MODULE cannot be plugged into a 9005 base LED. Originally this Module was polarity sensitive. The module would fail immediately if plugged in backwards. We have updated our latest production of these and incorporated a reverse polarity protection circuit inside the module that keeps this from happening. It will only work when plugged in the correct way.

Our DRL Module was designed in direct response to a need. When you plug LEDs into a low voltage DRL circuit they don’t get very bright at all. Most DRL circuits operate below 6 Volts, some as low as 3 Volts. Our LEDs need at least 12 Volts to be as bright as we designed them to be.  How do you get 12 Volts from 3 or 6 Volts? Magic? In a way yes, but that magic fits in a little black box. The box contains special circuitry that bumps the available voltage up to 14 Volts! It has its limitations, but it’s a nice tool to have available that is literally “plug and play”.  What kind of limitations? It cannot handle a large amount of current (amps) to be pulled through it. So you cannot use it to power up an HID Ballast or standard Halogen bulb. I do not recommend more than a 1 Amp draw through it.

Lexus IS DRL Upgrade

Applications: The first application was for the Lexus IS 350 Sedan. This car uses its High Beams as the DRL. It has a fluctuating voltage ranging from 3-4.5 Volts that lights LEDs dimly and causes them to flicker. The DRL MODULE boosts the power up so the LEDs are bright and stabilizes the voltage fluctuations. This eliminates the flickering and creates a unique look within the headlight housing as seen in the picture. This started out as a simple plug and play for an older style LED bulb. We developed a brighter replacement for that bulb and experienced the limitations of exceeding the current draw. Not of the DRL Module but of the Lexus DRL circuit. The Module draws a high amount of amperage from the DRL circuit in order to boost the voltage up so high. The current draw of our updated High Power LED bulbs combined with the current draw of the DRL Module overloads this circuit and will blow the fuse. We have developed a complete kit for these cars that allows the use of our High Power bulbs as the DRL and operates safely. This is the only vehicle application that we know of where our 28 LED High Power bulb will not work properly with the DRL Module.

Some misconceptions of the DRL Module include: Use it to deactivate the DRL function of your car, Use it to fix DRL warning lights, and Use it to add a DRL circuit to any car without a factory equipped DRL system.

If you want to upgrade your cars DRL to the crisp, bright V-LEDs, you will most likely be using this module too. If you are unsure if you need this part, or what other parts your car needs, you can always check our vehicle specific tab.  Here you can see if we have a kit already put together for your specific car.