It's a shame we are forced to use such a clumsy method to avoid ECU/BCU error messages. From an electrical efficiency point of view the shunt resistor to emulate the higher current draw of OE filament bulbs makes a mockery of LED current draw efficiency. Fitting resistors also impacts on reliability of the electrics given extra connections and the need for adequate power handling of same.
I assume modern vehicles equipped with LED headlamps from new have either no ECU/BCU monitoring given their greater longevity, or its geared to the substantially lower current draw. Either way I wonder if there is a market for ECU/BCU tweaks to accomodate after market LED replacements without having to resort to messing with resistors.
