Because LED use so low energy the car will think a bulb is out. Depending on the car and its warning alarms many things can happen. The bulb might flash quickly and / or produce a lamp out warning code.
You can also install special resistor packs to 'fool' the electrical system but all they do is add heat and waste energy.
My advice, dont do it. Light produced by LED's is poor compared to a traditional bulb which is much more important to alert traffic behind you vs. a millisecond improvement in lamp start time.
Only factory LED lighting is recommended. LED bulb swaps are not.
You can also install special resistor packs to 'fool' the electrical system but all they do is add heat and waste energy.
My advice, dont do it. Light produced by LED's is poor compared to a traditional bulb which is much more important to alert traffic behind you vs. a millisecond improvement in lamp start time.
Only factory LED lighting is recommended. LED bulb swaps are not.