Posted January 28, 200520 yr I was wonderin if i jsut bought the light i could still hook them up just as if i bought the ones you hook up from the store. In my car that is.if i just ran a 12v or lower source wire from teh anode and a ground to the cathode it should cut on and work just as a more expecive one would right, jsut tryin to save some money here. i bet dave could answer this.
January 28, 200520 yr It depends on what voltage the LED's are. Most are 3-4 volts so you have to run 3-4 in parallel for it to handle a 12v source. The most reliable way is to run 4 3v LED's. 3 of them will be brighter but might burn out sooner. Some places sell them with resistors on them too. That way you would be able to run each one on a 12v source. I bought a bag of blue LED's but I lost it. They were fun to play with and blow up. I think the longer wire is positive and the shorter one is negative but I might be wrong. The eBay ones probably won't be as bright as the $4 a piece LED, but just use more of them in a cluster.
January 28, 200520 yr Author i will buy them then, haha, i'll ask my professor how to make them brighter.
January 30, 200520 yr It depends on what voltage the LED's are. Most are 3-4 volts so you have to run 3-4 in parallel for it to handle a 12v source. The most reliable way is to run 4 3v LED's. 3 of them will be brighter but might burn out sooner. Some places sell them with resistors on them too. That way you would be able to run each one on a 12v source. I bought a bag of blue LED's but I lost it. They were fun to play with and blow up. I think the longer wire is positive and the shorter one is negative but I might be wrong. The eBay ones probably won't be as bright as the $4 a piece LED, but just use more of them in a cluster.You want to run them in series, not parallel. Parallel will send a constant 12V to each LED. Safest way I have found is to use and LED driver if using multiple strings. Either that, or just get the resistors for them. Well worth the investment.
January 30, 200520 yr It depends on what voltage the LED's are. Most are 3-4 volts so you have to run 3-4 in parallel for it to handle a 12v source. The most reliable way is to run 4 3v LED's. 3 of them will be brighter but might burn out sooner. Some places sell them with resistors on them too. That way you would be able to run each one on a 12v source. I bought a bag of blue LED's but I lost it. They were fun to play with and blow up. I think the longer wire is positive and the shorter one is negative but I might be wrong. The eBay ones probably won't be as bright as the $4 a piece LED, but just use more of them in a cluster.<{POST_SNAPBACK}>You want to run them in series, not parallel. Parallel will send a constant 12V to each LED. Safest way I have found is to use and LED driver if using multiple strings. Either that, or just get the resistors for them. Well worth the investment.<{POST_SNAPBACK}>Yeah, I wasn't thinking. Sorry.
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