Interior LED problem.
#1
Interior LED problem.
I just replaced my map lights with festoon LED bulbs.
When I turn one on it only comes on very very dimly. If I turn the second one on at the same time they both light up full brightness.
Do I need to add a resistor in somewhere so I can turn a single light on and off without having to turn them both on?
When I turn one on it only comes on very very dimly. If I turn the second one on at the same time they both light up full brightness.
Do I need to add a resistor in somewhere so I can turn a single light on and off without having to turn them both on?
#3
Does the resistance of the LED have to be equal to the bulb that WAS in the socket prior?
I'm thinking I can just drop in a resistor beside the festoon bulbs, or solder a resistor to the festoon leads.
#7
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#8
lol all good bud... I cant tell you I have a hard time remembering all the Calculus and even some of the efficiency calculations and what not, but I kept all my important textbooks and notebooks so it's all good
You can get a resistance reading over a diode if you have a nice fancy multimeter that has the ability to generate voltage to measure resistance across a circuit... they are usually more accurate too.
Anyways go measure and try a resistor that matches....
You can get a resistance reading over a diode if you have a nice fancy multimeter that has the ability to generate voltage to measure resistance across a circuit... they are usually more accurate too.
Anyways go measure and try a resistor that matches....
Last edited by Izero; 11-28-2012 at 08:27 AM.
#9
I kept all my stuff for the same reason, I'll never remember half of this stuff lol.
So I need to match the resistance of the LEDs bulbs I'm using?? the original bulbs measured around 2.2-2.5Ohms, but I'm thinking I should check the current draw from them, measure the actual voltage of the truck and calculate the resistance.
I guess I just don't understand why the resistance of the LEDs need to be matched with a resistor. Shouldn't I be trying to achieve the resistance of the original bulb?
So I need to match the resistance of the LEDs bulbs I'm using?? the original bulbs measured around 2.2-2.5Ohms, but I'm thinking I should check the current draw from them, measure the actual voltage of the truck and calculate the resistance.
I guess I just don't understand why the resistance of the LEDs need to be matched with a resistor. Shouldn't I be trying to achieve the resistance of the original bulb?