6G Celicas Forums

I need to know what voltage/ohms etc. for the wiring the cigarette lighter is on. I'm planning on using those harnesses to wire in an led. The specs for it are here:

http://www.superbrightleds.com/cgi-bin/sto...%2Fa2_specs.htm

I have plenty of resistors, just need to know what type I need to use so I don't burn it out.

if you check the fuse, you will see how much amperes(intensity?) the wiring can take
Voltage? its 12 volts, wired some gauges to it about 2 years ago.

the cig lighter has a light around it. Wire the gauges to that cuz the cig lighter itself is constant power. I wired my LEDs under my dash and seats right to that without any resistors but mine were all 12v... If u want sumthn on all the time then run it directly to the cig lighter itself

The cigarette lighter is 12V. The power on the cigarette lighter is switched, when you shut the car off, the port turns off (nice feature).

If you want one red LED in there, you want 20mA going through the LED. Therefore, you would use a 470 Ohm Resistor in there. An easy way to check how to wire it is using this awesome Webpage!

http://ledcalc.com/

Your supply voltage is 12V (varies though, from 11V to 15V) 13V is a good value to use. Voltage drop across each LED depends on color, but if you hover over the [?] button it tells you average values. For the LED Current, you wanna use like 20-30mA. But if they're superbrights, you may need more, read the package that came with your LEDs.

Did not know that about the amps, thanks!



Yours haven't toasted yet? How long ago did you install them?
Also, I'm talking component LEDs, with an anode and cathode - not LED bars or whatnot, if that's what you're referring to.



Did not know the supply voltage varied, thanks. - The port switching off is actually a "safety feature" Toyota uses on all their cars. If you turn the key off and something's still on, something's not wired in to factory settings lol.

The link I posted said peak current is 50mA, but continuous forward current is 20mA - so I'm assuming using a resistor to limit the current to 30mA would give me a bright light with no worries about it getting roasted in there?