Most newer vehicles come with a dust cover in the back of the headlight housing. These covers play a vital role in protecting headlight bulbs from moisture and debris. However, when installing LED replacement bulbs, you may encounter fitment issues due to the larger bulb base size:

1. The bulb base may be too big to fit inside the headlamp housing.
2. The bulb base may be too big to reinstall the cap back in place.

LED bulbs, especially those with high-performance chips, generate a significant amount of heat while operating. To effectively dissipate heat, a good cooling system is crucial for the longevity of the bulbs. This is why fanless LED bulbs often feature larger heat sinks.

When purchasing LED bulbs, it's important to check the size and specifications provided on the website. Bulbs with cooling fans typically have smaller heat sinks compared to those without fans. Keep in mind that bulbs without cooling fans do not generate the noise associated with fans, so the heat sink is designed larger.

In some cases, fan-driven bulbs may stop working due to excessive dust buildup. While some may think the bulbs are faulty, it is often the dust that prevents the fan from functioning properly, leading to inadequate heat dissipation. Cleaning the dust off the bulbs can often restore their functionality.

To ensure water and dust resistance, one option is to drill a hole in the cover and route the wire from the LED bulb outside of the headlight assembly. It's important to seal the hole properly to maintain the bulbs' protection.

For rubber dust covers that do not provide space for the wiring of LED bulbs, a slight modification may be necessary. This involves cutting a hole in the cover to accommodate the wiring, but be cautious not to make the hole too big, as it may allow water to enter the bulb hole.

At Go Performance, we offer an easy solution to replace the original dust cover. Here are the steps:

1. Check if the LED bulb has enough clearance to be installed.
2. Use a dust cover to protect the bulb.

If there is sufficient space inside the headlight housing, you can leave the LED driver or extra harness inside. However, please note that load resistor harnesses generate high temperature and must be wired outside the dust cover if your LED system requires them.