And for what its worth too if your car has light testing built in to the
computer system the led lights will flash on every 10 seconds or so when the low
current test pulse is sent out to see if all the bulb filaments are intact.

I have a circuit that stops led replacement high level brake lights flashing but
never integrated it into the whole enchilada of electronic test circuit.

basically its a 1/2 second delay using a resistor-capacitor input switching a
Darlington pair driver to switch the led circuit.  Works a treat.

There are a lot of them.  Your local auto parts store will sell them.
For the most part, they don't work worth a damn and are a waste of money.
Maybe in a few years things will improve.
--scott

Hello BMW owners,

I have 1999 323i, with regular bulb-lamps for its lights (headlights,
signal, tail lights).  I know there is an option to replace the
headlight with halogen -- but I was wondering, I see that there are
LED lights to replace regular bulbs for flash lights and some lamps
for home.  Is there any similar products for cars?  I don't think LED
is bright enough to use for headlights, but I think it can be used for
signal lights and taillights as new cars used these days.

The replacement LED lights I mentioned for home lights have the same
screw for the socket but just with LEDs.  So new LED lights can be
used without buying whole new one.  I was hoping to find similar
products for tail/signal lights for my car.

Does anyone know such products?

Thanks.