DIY LED brake lights

[AE82GT]

Mind to share some pics after done it.... :P

 

[ksgoh]

really got 12V LED ar?? have to ask liao....maybe can get it free from machine vendor......:D

 

[ctan13]

Refer to this link for a sample schematic. Appreciate any pics from anyone here who has done it first.

http://www.web-ee.com/Schematics/Brakes/brakes.htm

 

[ksgoh]

thanks ctan13.....

 

[khguan]

yes... there are 12v LEDs.. but rare.. u can find them in electronic stores...

got in big size somemore... 10mm diameter... but more expensive.. duno de price...

 

[L9Turbo]

I'll go get the 12v LEDs this week. But how to connect? Just in series? or parrell? No need resistors then?

 

[ctan13]

I think you will need to check with the shop what sort of current the LEDs need. Based on that, you will then need to calculate the value of the resistors using the formula as stated in the link given by InitialD and myself. 12V LEDs doesn't mean that you can just plug them into a 12V supply ... it also depends on the current. I'm no electronic expert, but that's what I understand from all that I've read.

 

[ksgoh]

yes, that's right....V=IR...

 

[sharkair]

just an opinion. switching circuit will be having current spike in it. current is equivalent to rate of voltage changes over time (dV/dt). the voltage travel from 0 to 12V within a very short time. this introduce spike in switching circuit.

however, this effect (current spike) can be dampened by putting a capacitor across +/- terminal.

My point is, better to use capacitor across power supply if you want to have your simple LED life longer. The circuit is good, but current protection must be there.

http://www.web-ee.com/Schematics/Brakes/brakes.htm

 

[L9Turbo]

Thanks for the input! :)
Cheers

 

[ksgoh]

agree....fuse should be added....protection for capicitor...

 

[khguan]

12v LEDs use parallel connections.. means can put direct to car batt.

use a fuse for safety..... if ur wiring short.. then wun burn ur car... hahah

yah.. i forgot to tell u guys dat those 12V LEDs kedai abang got sell... but only got blue,white in colour...

at melaka.. price is rm10 for 2 pcs, in Serdang.. rm12.50
those are used for the small light (wedge bulb)... u know sometimes u c ppl's car got de blue color light on their headlight when they on the small light... dat wan lar...

 

[L9Turbo]

Wow... price is double the normal super bright LEDs.

 

[khguan]

well if u can find those 12v LEDs in electronic shops (without de wedge bulb leg mountings).. it would be cheaper.... B)

 

[ksgoh]

that's right....LED's life time is last longer than bulb.....

 

[khguan]

this is de LED i mentioned.. bought from Brothers at melaka

 

[khguan]

this is how it look like

 

[khguan]

this type of LED do not focus de light.. therefore it spread de light...

very suitable to use as a wedgebulb.. i used it for my rear no. plate light.. using blue ones.. effect damn nice.. n bright too!! blue colored bulbs cant get those blue effect.. B)

 

[ksgoh]

oem number plate led also similar like that??

 

[goslow]

the double sided tape can use the 3m ones..strongest i've found after trying so so so many others..can get from this paint shop in seapark..it's the one which proton uses to stick their visors and bla bla bla