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Resistors for LED's?

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Old 01-05-2008, 04:44 AM
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Question Resistors for LED's?

Hey guys I just installed some LED's for my parking lights, sidemarkers, glove box, and trunk. I will soon be installing some more in the doors and overhead lights. I was wondering if I am going to need to install some resistors because I don't want the LED's to burn out fast. What kind of resistors will be needed if I have to install them. Any info would be appreciated. Thanks.
Old 01-05-2008, 07:51 AM
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I think you only need resistors if you are using LED's as flashing bulbs like turn signals.

Also, they say not to use the LEDs in the headlight housing because they will "burn out" due to the heat of the headlights. I ignored these tips and sure enough after 5 months one of my parking lights began to flicker. They look sweet everywhere else on the car tho.
Old 01-05-2008, 09:26 AM
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The LED replacement lights already have a built in resistor because if they didn't they would blow up.
If you bought individual LEDs at an electronics shop you'd have to provide your own resistor based on the specs of the LED and Ohm's law.
Old 05-12-2008, 02:48 AM
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Ok guys my right side marker is starting to flicker, so I will be ordering new bulbs and some resistors for the sidemarkers from v-leds. What kind of resistor will I need? Thanks.
Old 05-12-2008, 09:28 PM
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Come on guys someone please help me asap! I am going to be ordering the lights tonight (in the next few hours) and need to know what kind of resistors to order. Thanks.
Old 05-12-2008, 10:20 PM
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If you have LED bulbs from v-leds, then you don't need resistors. Exceptions are of course the turn signals where the resistors are necessary to prevent the hyper-blinking.
If you got LED side markers that started to flicker, then simply the LED bulb is faulty and has to be replaced. I had one such LED bulb, and replacing it took care of the issue. No resistor was necessary.
There may be some truth to the effect of heat of the headlights, because in my case, the flickering bulb was the parking light as well. The replacements are doing fine though. Had to replace both parking light bulbs because they did not carry the exact same 194 LED bulb, and the old and new looked different.
Old 05-13-2008, 02:09 AM
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Thanks for the help. I knew resistors were needed for the blinkers,but I wasn't sure about the sidemarkers until now.
Old 10-06-2008, 05:05 PM
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I don't mean to revive an old thread, but...

I ordered my LEDs (for clear corners & parking lights) from some guy on eBay and sure enough, they all started to flicker within 3 weeks of installation. I wrote back to the seller asking what his return policy is, he said it's only good for 7 days, and that the flickering is a sign that resistors are needed.

So then he started pitchin me the resistors, saying I'll need one for each socket, $5 each, claiming they're easy to install.

I guess the conclusion is that I'm going to order from v-leds. My question is, if those lights start flickering down the road, and I do attempt to install some resistors, how feasibly is this installation on the corner lights? It seems like there is just so so little slack in the wires that installing anything additional would be impossible. Has anyone successfully installed resistors on corner lights or parking lights?

Thanks,

Taylor
Old 10-06-2008, 05:15 PM
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resistors are typically used only on lights like the blinkers. The reason for that is the LED's are much more efficient so they end up blinking much faster (b/c they use less power)

I don't have LED's in my blinkers but all the other bulbs have been changed to LED with no flickering.
vleds is VERY good.
Old 10-06-2008, 06:32 PM
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Jedi, you're the man!

I'll give v-leds another try
Old 10-09-2008, 12:47 PM
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what happens is that blinking lights use a thermal load switch... aka... when the electricity flows into the light, it heats up the circuit, causing a switch to expand and break, the light turns off... cools down, and as it shrinks, it re-makes contact.
When you throw an LED bulb into the mix rather than an old filament, it comes down to pulled pork. Ribs, beef brisket, and chicken are all great, but bbq perfection can be found in a pulled pork sandwich in a plain white bun. So, always the enabler, Alexis bought me a pork butt today (which by the time you read this, it will be yesterday). It's a 7lb butt so it should take about 10.5 to 14 hours to cook. It's going on the cooker at sundown and should be ready just around sunrise tomorrow.

For lack of anything better to write, I am going to chronicle this cook just for the hell of it. I'll try to write it in the style of that show 24 to make it more exciting, but since I've never actually watched that show and only know one character's name, I am sure this won't even come close.

Tuesday 6pm – Jack Bauer filled the Big Green Egg (BGE) with lump charcoal, hickory chunks, and apple wood chips (While on the phone with his pain in the neck, by the book boss). Jack Bauer fires the BGE up and brought it up to 250f. Jack Bauer injected the butt (aka boston butt, pork shoulder) with the injection used by Chris Lilly and the Big Bob Gibson team. Jack Bauer rubbed his butt with Billy Bones Original and Billy Bones XXX Cherry rubs in a 2:1 mix.

Tuesday 7pm – Jack Bauer put the butt in the egg (while firing his gun at some bad nefarious dudes). Dome temp* (air temp inside the egg is 250f) and the internal temp of the butt is 51f. It is a gorgeous night, the clear blue sky is slowing fading to purple as Bauer sits on the back deck with his female sidekick. The smell of smoke is thicker than the overly written sexual tension between him and his female partner, which is painfully obvious to the audience yet Bauer is oblivious to it.

Tuesday 8pm – Dome temp is 225f, internal temp 72f. It's almost dark now. Jack Bauer hasn't done a damn thing other than to check to see if there was a secret message encoded at the bottom of a can of beer that he bravely drank in the interest of national security.

Tuesday 9pm – Dome temp is 240f, internal temp is 111f. Jack Bauer fights off two masked ninjas and two KGB thugs and quickly slides the bottom vent to reduce the dome temp just a touch. Bauer recovers this recipe for Carolina BBQ Sauce from a top secret Interpol database and makes a small batch of it for finishing sauce.

Tuesday 10pm – Dome temp is 230f, internal temp is 136f. Ok, Jack sees the look on your face. If the internal temp has raised over 50 degrees in 2 hours, won't this thing be burnt to a crisp at 10.5 hours? You don't TRUST Jack Bauer? Well +$&= you too! Here's my badge, I quit!

Ok, Jack has chilled. Sorry bout that. It was just a flash back from Lost Boys. Anyhoo, the pork will stall at 165f for hours before jumping up to the 190 to 200f we need to break down all of the fat.

Tuesday 11pm – Dome temp is 230f, internal temp is 147f. Special Double Secret Agent Jack Bauer slides onto the deck using a zip line, dodge small arms fire. He sees that all is well. The butt temp is slowing down as expected. He refills the drip pan with apple juice/water mix and then BASE jumps off of the 12 foot tall deck.

Wednesday 12am – Bauer pulls up in a convoy of blacked out late model SUV's to discover that the dome temp is 225f and the internal temp is 154f. The egg isn't putting out much smoke anymore but that's okay, meat generally quits absorbing the smoke flavor once it hits an internal temp of 140f. He looks at his watch nervously a few times [sound effect of 1980's count down 'doot-doot-doot'] then he and 3 suited agents storm off, heels a clickn'.

Wednesday 1am – Dome temp 220f, internal temp 158f. Bauer repels from a helicopter (black, silent, you know the drill) and then slightly opens the lower vent to raise the temp. He looks agitatedly at the camera, "What? Yeah, Donald Sutherland is really my dad. What? NO! I can't get you his signature! Bug off! And QUIT CALLING ME 'ACE' !"

Wednesday 2:30am – Dome temp 220f, internal temp 160f. After hacking into a secure network to access information that will expose Mr. Big, Jack Bauer adds more water/apple juice to the drip pan. Bauer wonders what happened to his partner with all the sexual tension stuff…damn lack of continuity between staff writers!

Wednesday 7am – Dome temp 210f, internal 175f. Oh crap, Agent Bauer overslept….errrr…I mean he tried to lull the enemy into complacency by pretending to oversleep. Fortunately, the lower temps kept it from overcooking. Jack opens the top and bottom vents to bring the heat back up to around 250.

Wednesday 9am – Dome temp 250f, internal 199f. Bauer speaks into his cuff link and then carefully removes the smoked butt from the smoker, wraps in twice in foil, and places it in an empty cooler. This allows the meat to rest and throws off any meat tracking satellites.

Wednesday 11am – With all the bad guys blowed (sic) up, Bauer pulls the pork into shreds (with his shirt sleeves rolled up to reveal his manly forearms, of course). He piles some on a plain white hamburger roll and tops it with some of the finishing sauce. Delicious!
Old 10-10-2008, 12:56 AM
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yeah, you lost me right about here:

"rather than an old filament, it comes down to pulled pork. Ribs, beef brisket, and chicken are all great, but bbq perfection can be found in a pulled pork sandwich in a plain white bun."

and:

"what happens is that blinking lights use a thermal load switch."

The corner lights and the parking lights are not blinking lights.
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