HDL Ultra Series replacement CANBUS LED bulbs are designed to function appropriately in modern vehicle CANBUS systems and are a common upgrade to stock halogen bulbs. This makes retrofitting and upgrading your vehicle to LED bulbs simple. Designed with a ball-bearing, fan cooled system, these bulbs produce a very high lumen output. These bulbs work with your vehicle’s advanced computer system, so when your vehicle’s computer reads them, they respond back correctly.

A CANBUS control unit is a small cable and adapter system, which is installed in between the wiring of your vehicle and the LED bulb. Because LED car bulbs use a lower wattage than other bulbs, the CANBUS canceller helps to increase the current safely and without damaging the bulb. In most cases use of CANBUS LED bulbs should prevent a “bulb out” indication warning light or code. The CANBUS bulb system is also designed to be robust towards electronic disturbances and electromagnetic interference known to cause radio feedback.