PlugNplay drop in for those peanut shaped incandescent interior dome lights. Very happy with these, they're really really bright compared to the bulbs they replace.very bright led's. They are 12v rated and should be connected to a 3 cell lipo. When you connect them to a 2 cell lipo they don't work. I have connected these to an DIYDRONES APM 2.5 FC board and uploaded the connection diagram to the files tab (file = APM 2.5 LED connection diagram). A more clearer shematic is also available on the blog: wipo-y6copter.blogspot.beWow. surprise very goodUsed with power switch on my glider to light up the canopy during soaring with multiple other glider in the sky !note very brigth but polarity protected.Fr den Preis einfach nur genail, super hell. Kommen in meinem Ford Focus RS als Innenraumbeleuchtung zum Einsatz, habe die ganze Beleuchtung am Auto gegen diese LED ausgetauscht.They're cheap cause they're made of second or third sort of leds. They are not so bright as same type bulbs (more expensive) from other sources. Anyway good for the price.These are a drop in replacement for a T10 size 5W 12V car lamp, although slightly longer (by 3-4 mm).
I replaced my front parking lights with these and they are MUCH brighter than the original 5W conventional bulbs, with a pure white colour.
They only work one way round (so just spin them 180degrees if they don't work the first time).
And they cost here the same as a set of normal 5W lamps at a petrol station!