Besides the wattage spec and color, note carefully that LEDs will have a different # of smaller LEDS mounted. Also LEDs will have a different types of light output dispersion.
Because of the wide variance,
before buying quantities buy a couple of different versions try each then decide what looks best for your application. Over the last few years there have been a lot of advances in various LEDs for automotive applications. I tried at least (5) different versions before deciding on a single 1. Also I would suggest that U purchase a couple of spares for possible future use.
Just my $0.02...
Agreed! Most of the cases, the correct led bulb selection comes from a tryal and error process.
About dispersion... several tries have been made for this, from a diff led arrangement and quantity to a diff kind of lenses for them ( diff optical dispersion used, or translucent lenses ). What I have seem is that the best kind of led bulb would be the one which looks like this
Instead of these
This is a G4 bulb made for home lamps which I used as an example. The first one shows
a led like a continuous ribbon which bends to both sides and makes a continuous dispersion. The other one is more the tipical one being an array of leds. Difference is huge between both. HOWEVER I dunno if auto minibulbs are being made yet like the first one I posted.