Many cars have sensitive in-vehicle monitoring systems which can be affected by the low current draw of an LED replacement globe. A resistor may be required for signalling and headlight globes and the generation I version may also require the CANBUS control module.

LED globe resistors and electronic canbus modules are sold in pairs.

Please note: When installed in exterior lamps or on the vehicle exterior, LED upgrade globes/decorative lights are intended for off-road or decorative use only. Please check your local laws before using.