This product is designed to work with any of the LED bulbs which we stock; if you are in doubt then please contact us and we will advise you further. Please note that these will get hot, so it is essential to mount this to a metal surface. Professional installation recommended. Information Many existing vehicles are designed for use with halogen-based products, and installing LEDs can often trigger a warning light on your car's dashboard. LED technology uses a lower wattage, and the vehicle believes the LED bulb is faulty. The Autobeam Load resistor for LED lamps eliminates this problem. Installation of this item bypasses the lamp failure function of the can-bus system on your vehicle. It's easy to install onto the car - it simply clips onto the wires. Plus, using this product doesn't negatively impact the light output or heat management of the LED lamps. What's in the box 2x Load Resistors4x Splice Connectors Warranty 2 Years If purchased outside the UK, the warranty is limited to 12 Months. Other Information Please note that this LED load resistor will get hot, so it is essential to mount this to a metal surface and not plastic; anything that is not heat-resistant must not be able to touch the resistor. A professional must install this product. We will not take any responsibility for incorrect fitting causing heat-related damage. Packaging type may vary depending on stock. If you are having any issues with your LED conversion(s) such as the below then this is the product for you: -CANBUS Dash Error/Warning - most European cars are fitted with CANBUS systems, which warn you of bulb errors.Hyper Flash - normally relevant to LED indicator conversions and in some cases other LEDs also.One Bulb Out - one side of the bulb is not functioning correctly, such as one sidelight or number plate LEDs.