Indeed. You may want to look at at least 5 watts total. I have some 3W "drop-in" 1157 units that aren't quite as bright as I'd like.Any red power LED will do it. For instance you may want to look at Cree MC-E or XP-E LEDs, as those are models that do come in red. You may wish to use several.
just wondering how this compares to a few cree's. i might be doing this sometime soon.Use a lot of 5mm high brithnest leds, buy in ebay, connect groups of 4 leds in serie with a 180ohm resistors and this groups in parallel, install them in a universal PCB, then use a 220ohm 5 watts with a diode for the tail light, is easy to build than high power Leds, let me know if you need more help about it...
for my application, bike trailer.
You'd rather them work in such a way that people identify it correctly as a trailer, so that there is no ambiguity or uncertainty of the message the lamps are conveying.i want them to be bright enough for people to think it might be a vehicle.
it is not for commercial use. the laws for my area permit the use of a red steady tail light, visible to 500+ feet.I could be wrong, but the lighting equipment for the trailer must still conform to FMVSS 108 requirements (it appears that if it's for commercial use, it does).
thanks, but i can spend all day browsing stuff online to bolt to the trailer. that's not the point. the point is to make it myself, make it fit where it needs to go, and make it aesthetically appealing. i'm only asking for the comparison of brightness here.You'd be better off getting a new trailer light kit rather than trying to cram stuff into existing hardware that won't work correctly.
A few samples of what's out there are here.
the message i want to convey is avoidance. i don't care what vehicle they think it is. as long as they notice me and don't hit me, all is good. (case-and-point: why would they make 2000-lumen bike lights if people think it's an oncoming motorcycle?)You'd rather them work in such a way that people identify it correctly as a trailer, so that there is no ambiguity or uncertainty of the message the lamps are conveying.
On the subject of 'ambiguity' I guess we should clarify what sort of "bike trailer" it is.
Is it attached to a) a car or pickup, b) a bicycle, or c) a motorcycle ?
I pictured a trailer attached to a car or pickup, and carrying a motorcycle.
my intent is ... to make it clear of what i'm asking.
my mistake. the trailer will be towed behind a bicycle.
also, i am not the op. i had a similar question relating to the op's, and didn't want to create one-more-thread
And are illegal.I bought LEDs for my upper stop light and just plugged them in. They are made/sold for that purpose.
The human eye and brain are easily fooled. In the chance that they ARE brighter, they may be too bright in some areas, leading to excessive glare.They appear brighter than the original incandescent bulbs.
But you can avoid all the hassle (and legal issues) by not replacing the filament bulbs with LED 'drop-ins'.If you are going to use turn signals/running lights you may find the OEM flasher won't work because the LEDs don't use enough electricity to activate them. Special flashers and bulbs are available for such use. They can be tricky and frustrating to install, though.