View Full Version : What ohm resistor goes ...
Salincer
06-01-2010, 04:15 PM
in the guage cluster. Im in the process of swapping all the LED's and i hear you can swap resistors out to be brighter.
http://i21.photobucket.com/albums/b284/seanyiya/Toyota%20Celica/Gauge%20Cluster%20LED%20Conversion/LEDconv_13.jpg
I measured the volts at one side of resistor-12v, and the other-6v. Currently a 470ohm resistor is there. One 'current' controls 2 leds. so stock orange, each led is getting 2 volts. So if i want 1.3 more volts per LED, it would be a 270ohm resistor correct?
02celica
06-01-2010, 09:47 PM
That should be correct.. less resistance (ohm) = more power (V) so you should be good. I'd double check with LEDMOD and 2Way or Prox.
lamboceliGTS
06-02-2010, 05:55 AM
I would PM 2Way to double check.
Salincer
06-02-2010, 06:17 AM
hmm..well im pretty sure the resistor part is right, but at the moment, the LEDs are getting 3.1ish volt without resistor change. The stock orange leds must have used 3v :S? Usually orange is like 2.2ish volts
broderp
06-04-2010, 09:53 AM
in the guage cluster. Im in the process of swapping all the LED's and i hear you can swap resistors out to be brighter.
http://i21.photobucket.com/albums/b284/seanyiya/Toyota%20Celica/Gauge%20Cluster%20LED%20Conversion/LEDconv_13.jpg
I measured the volts at one side of resistor-12v, and the other-6v. Currently a 470ohm resistor is there. One 'current' controls 2 leds. so stock orange, each led is getting 2 volts. So if i want 1.3 more volts per LED, it would be a 270ohm resistor correct?
That should be correct.. less resistance (ohm) = more power (V) so you should be good. I'd double check with LEDMOD and 2Way or Prox.
The resistors are there to LIMIT current. To simply lower the resistance without verifyingthe LEd can handle the forward voltage is STUPID. They will glow bright for about 5 minutes, then they will DIE. (or get really DIM)
If you're doing the LEDmod thing, he suplies the corrent value resistors that are known to work for the LED he sells.
Salincer
06-05-2010, 11:36 AM
The resistors are there to LIMIT current. To simply lower the resistance without verifyingthe LEd can handle the forward voltage is STUPID. They will glow bright for about 5 minutes, then they will DIE. (or get really DIM)
...regular orange leds get about 2volts. I assumed that it was getting 2volts to each orange LED. Changing the resistor to a lower ohm will let MORE voltage get through. 3volts is whats need to light a BLUE led. 2volts will not do justice for a blue led...it will be dim. So changing the resistor to lower ohm will give me an additional 2 volts...(one resistor controls 2 leds...so one volt an LED).
but for somereason they are getting 3volts anyway..so i just put the stock resistors back in
The resistors are there to LIMIT current:werd:
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