Narva H4 Canbus Module (Suits LED Upgrades) 18184

H4 CANBUS MODULE (PAIR). Many cars have sensitive in-vehicle monitoring systems which can be affected by the low current draw of an L.E.D replacement globe. A resistor may be required for signalling and headlight globes and the generation I version may also require the CANBUS control module. L.E.D globe resistors and electronic canbus modules are sold in pairs.