Bulb Led
Bulb Led
Dashboard Instrument Panel Light Bulb replacement with LED?
I want to replace my bulbs in my dashboard. The bulb name in my dashboard is #74, with the twist-lock base. I’ve popped out the #74 bulb already and would like to know, if I can use a standard LED in its place with any problems?
*note it’s not the #74 Led Bulb that you can buy online, its one of those standard Led Bulbs with anode and cathode (short & long pins)
thanks V.much I will just buy some from the online store
Responding to your *note: "its one of those standard LED bulbs with anode and cathode (short & long pins)"
No, you cannot use that standard type of LED to DIRECTLY replace a 12 volt incandescent lamp, because doing so would instantly burn it out.
Typically, these require a CURRENT LIMITED source, and operate at, usually 2 to 4 volts, @ 20 mA.
What you CAN do, to use these LEDs on 12 V, is to place a resistor in series with them. (A 470 ohm, 1/2 watt usually is about right.) The resistor will limit the current into the diode to it's normal operating level.
But it is BARELY worth the trouble, and you are better off, just buying the LED exact replacement, if you want LED dash lamps.
Sorry.
BTW, There ARE wire lead (baseless) LEDs which will run on 12 volts, but these are not the "standard" type as per your question.
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