12v LED keeps burning out

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airride2

Member - Posts: 7

Joined: May 22, 2002

Location: United States

Posted: May 05, 2006 at 12:43 AM / IP Logged

I have a eagle talon with a water injection kit, basically i just want a LED to come on when the water solenoid is energized, simple enough, bought a set of 12v led's from walmart, white led with resistor, tapped it into the solenoid + side, grounded the other, worked great for a few times, then the led seamed to have burnt out. Any ideas why?

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meltingplastic

Copper - Posts: 225

Joined: November 08, 2004

Location: United States

Posted: May 05, 2006 at 10:50 AM / IP Logged

with your car running, its tech 14.4 volts.. might want to add another resistor in series before the led to drop the voltage

Driving a Bagged, Caddied 02 s10

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ff-mike

Copper - Posts: 199

Joined: November 15, 2004

Location: United States

Posted: May 08, 2006 at 9:17 AM / IP Logged

Try a reverse biased diode across the solenoid terminals.

The solenoid acts much like a relay, and the coil in it may be generating a higher voltage when de-energized and the magnetic field collapses. You should be able to find some tech info on this in the relay section on this

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crcustoms45

Member - Posts: 29

Joined: February 15, 2006

Location: United States

Posted: May 29, 2006 at 4:19 PM / IP Logged

or you could use the trigger wire for the solenoid to throw a relay. test the leds before you put it all together, your inline resistor could be too low resistance.

did you ground the led to the ground on your solenoid? try a separate ground.

let me know how it goes im curious.

Chris

CRCustoms

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12v LED keeps burning out

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