L.E.D Brightness

[Draco87]

I was out for a ride the other day with a friend who was following behind, I always ride with my lights on. When we had stopped he told me that the normal red light light was visible but when I applied my brakes the rear light brightened but not by much and he also said that my indicators were fairly difficult to see. The bike had however passed an mot with these l.e.d lights. I've checked all the wires and everything seems ok although the wires are taped quite badly as the previous owner had replaced stock lights with these I'm not 100% sire how they are meant to work. But I'm wondering are these lights just some crappy replacement or if in need of a resistor like the front indicators do or am I just being paranoid?
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1992 Yamaha SR125, 2005 Honda XR125, 1998 Yamaha XJ600S, 2000, 2004 Yamaha R6, 2002 Yamaha Fazer, 2004 Honda CBR

[nowhere.elysium]

It's nothing to do with whether or not they need a resistor - LEDs are highly directional, and are utterly useless as indicators and tail lights unless there's some kind of diffusion effect built into the lens that covers them.
Personally, I'd replace them with incandescent bulbs instead.
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'10 SV650SF, '83 GS650GT (it lives!), Questionable DIY dash project, 3D Printer project, Lasercutter project

[Draco87]

Thanks for the response dude, after some time researching the net for answers I also came.to the same conclusion that they are useless! I also agree it is a good idea to swap them out so going to check out the local store for an ideal replacement. Thanks again bro 😊
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1992 Yamaha SR125, 2005 Honda XR125, 1998 Yamaha XJ600S, 2000, 2004 Yamaha R6, 2002 Yamaha Fazer, 2004 Honda CBR

[stinkwheel]

If you go for higher-end ones, they are ok because the LEDs are arranged in a variety of angles.

The usual ones you see, a cluster of dome-type LEDs are pretty crap, as said, tey are very directional.

I just got some LED indicator bulbs for the wifes bike which have surface mount LEDs on, they are super-bright. Almost too bright as they're close to overwhelming the orange tint on the indicator lenses and just appearing white.
https://i.ebayimg.com/00/s/MTYwMFgxNjAw/z/-zkAAOSwBLlVHYHP/$_35.JPG
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[Rogerborg]