H4 CANBUS MODULE -Pair (FREE DELIVERY)
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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.