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Scion xB 2nd-Gen ICE & Interior In-car entertainment and electronics...

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Old 07-23-2007, 07:51 PM   #1
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Default Cupholder leds problem and question

I got 3 10mm leds pre-wired from radio shack. I hooked them up to my existing system of lights and the output is very dim. Any idea what went wrong? They are pre-wired and have resdistors built in....
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Old 07-23-2007, 08:14 PM   #2
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too much resistance?
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Old 07-24-2007, 02:39 AM   #3
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yeah that sounds like a resistance problem. do you know the voltage and the amperage of the 10mm?? id get a ohm meter and check the resistance of the lights.
If all of this is sounding like jibberish then go to google and look up led info and wiring techniques
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Old 07-26-2007, 03:05 PM   #4
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does your existing system already have resistors built into it ?

if you tied in the new ones with resistors maybe, just maybe you got twice the resistance that they need.

check the resistance in your existing system to make sure, if it is already there, take out the newly added resistance and get your brightness you want.
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Old 07-28-2007, 12:49 AM   #5
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Okay, I have done some searching on Google, dogpile, etc. I have got a basic idea of what to do, but it seems like the articles are either really basic or in depth. I was hoping to add an LED light (or two) to each cup holder. I was originally thinking I would simply wire them to the cigarette lighter. This was because it is very close, will only be on with the ignition, and would be adequate power. Now I am thinking it is too much power. Anyone have suggestions, knowledge, advice to offer?
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Old 07-28-2007, 01:53 AM   #6
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Is there such a thing as too much power if they have resistors?
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Old 07-28-2007, 04:16 AM   #7
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make sure the leds you are installing are wired correctly together... because if the leds are wired in series the light will be dimmer as opposed to having them wired in parallel which should make it brighter
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Old 07-28-2007, 05:10 AM   #8
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So can I wire them (parralel) from the factory cigarette lighter? I was thinking of buying the pre-wired orange ones from Oznium.
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Old 07-28-2007, 05:41 AM   #9
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as long as it is wired in parallel it should give you the brightness you desire
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Old 08-01-2007, 07:58 PM   #10
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Mine are wired in line... hmm have to get under the dash this weekend and do some work.
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Old 08-01-2007, 07:58 PM
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