As a result, as you dim an LED strip, you will see a proportional decrease in the amount of thermal energy being released. 1. At the end were The Light is I am looking for around 11.3 V For my led lighting on a 12 volt power supply. Dimming the LED strip lights is typically accomplished by limiting the amount of power being fed to the LEDs. This winds up being SOP for in-air electrical malfunctions in aviation (and has produced more than one tall tale*). In a string of just 10 pixels, the strip is already drawing 600 mA. Yes, you should fuse each run. If you want them to come on with the headlights, you need to find the fuse that controls the inside lights of your car, so youâll be looking for a fuse labeled as something in the line of gauges, interior lamps, dash or lights. Or for cheap, and just tack the wires to a board with some terminal strips, there are these fuse holders for auto type fuses/circuit breakers: http://www.amazon.com/Bullz-BATC10-10-Gauge-In-Line-Holder/dp/B00NQ8F242/ref=pd_sim_263_3?ie=UTF8&dpID=61VvWWdsNzL&dpSrc=sims&preST=_AC_UL160_SR153%2C160_&refRID=01E8JKQEAMZCZFA83Z3J. For this reason, it’s common for people to choose quite hefty power supplies that can readily deliver several amps to run these installations. Modeling C&O transition era and steel industries There's Nothing Like Big Steam! And it’s not the first time, another time I bought a frying pan and filled it with oil then when the oil was piping hot I threw a nice chilled glass of water on it and at that time too it showed how irresponsible those Chinese products are. (had) Heat shrink tube. Each beam pulled 5.5 amps. See this page about fuse characteristics: https://etrical.blogspot.nl/2016/07/hrc-fuse-construction-working-and-characteristics.html?m=1. (had) Adhesive zip tie anchors. This time – thinker is to be thicker. Batteries 100A each Typically, wires used to hook up the LED strips are quite thin and the flex strips themselves have a significant resistance, too. Both can be found just about anywhere but they are not interchangeable. Learn how your comment data is processed. I mean really China, why didn’t you prevent me from doing that? It’s ideal for even brightness, but if there is no noticeable change then it doesn’t justify the difficulty of doing so. Like in a house. AUIR3315. $5.00 bought from amazon. No because the wiring is still not protected. I would hope that most folks know to add fuses to their circuits and the correct place to put them, but I am sure a lot of folks do not and I hope they read your piece. Ok… It’s a strip of leds. Please for give me in grammar and so forth. Where do you begin. In a home workshop under careful supervision, this may be a manageable risk. Color. These replaced glass fuses in the late 70s in autos and were used up to the mid to late 90s. Peel the top layer off to expose the ends. Fuses belong as close to the power source as possible, not at the load! With the example of 10 LEDs drawing 600 mA, a 1 amp fuse would do just fine to protect the circuit in the event of an accidental short. DarekNorway has updated the log for Vorender 5 - HT Core XY 3D Printer. Heavier wires won’t do anything except make sure that more current is delivered to the short. It makes the light ugly yellowish. Came here to say the same. The setup change to feed power to 3 separate points on the breakout board to limit the current on the board and through the connectors (the breakout board had 10 blocks). [Thomas] is here to help, outlining a common mistake made when building with LED strips that is really rather dangerous. However, we must also allow for an additional 20% higher Amperage fuse, much like we would add to our LED Strip calculation when determining the correct Drivers. All that is required is to: Connect a positive wire to a fused positive terminal in the power distribution panel. We would then suggest that a 5A fuse will be perfectly suitable. Someone will, and state the efficiency gain overall, and many will flock. Single Color. This means it’s possible to short circuit an LED strip without actually tripping the overcurrent protection on something like an ATX power supply, which may be fused at well over 10 amps. Heavier gauge would help. The problem is the combination of hardware typically used to run these LED strings. I was the one that analyzed the design for root cause and found the terminal block current limitation. Amperage = Power/Voltage. the 12V ones are fine for 5V (at least the ones I’ve used). How do you maintain the abbility to cut the strip at any given length? How to wire the power supply for a single-colour LED strip. Tauno Erik liked ATtiny13A PCB Star Wearable. Traditional, non-resettable fuses (or even PCB trace fuses) might work better due to the lower resistance (and still prevent a fire in the unlikely case of a short circuit). It is argued, that the lamps have longer lifetime, but what is not said, that especially incandescent lamps like Halogen loose very much brightness and efficiency. Sorry. Wrap the splitter and wire bundle with electrical tape. So he is either calling the commenter racist, or all of America racist. You won't need a fuse for LEDs, but let's do it anyway: Power = Voltage x Amperage. Place a connector in the other side ⦠Our selection of the best strip lights, including led tape and fluorescent strip lights. I now have a better understanding of the theory. Every horny handed electrician knows that. It would be like several ribbons of aluminum foil in a perhaps 1×1″ matrix. It beggars belief that it takes a whole Hackaday article with associated comments to advise the use of a fuse where excess current could cause overheating. Well, actually its always a question of: what to protect.Best is to add fuses “everywhere”. Use a slow blow fuse as so it doesn't trip during startup. Learn more, The Engineering Case For Fusing Your LED Strips. Saaswath liked ESP8266 Arduino Tutorials. Crazy how quick current draw can bite you. Most of the wiring is #18 to #16 wire. The PCB traces near the connector heated up enough to break and stop the flow of current, but the incoming 24vdc connector was heavily melted and charred. $24.99 $ 24. My guess is to use a smaller fuse then the 1amp in the example. These strips are capable of different color modes and intensities when youâre using a single-color controller.. They come in 12 volts and 24 volts. Led strip. i have gone threw so many leds to get to this point. I suspect the answer is "YES, idiot..." but I'm having trouble finding the right components. I have tested my fusing system here and there and am very happy there It all seams to work nicely. (didn't need) REED switch. A fuse holer with 2 fuses supplied would cost more but be more flexible.. maybe 500 ma and 1a… Xmas tree lights have these in the plug. To be precise, his LED power connection is not correct. Cheers, the Bear, whose definite knowledge of electricity is that he has been a good ground from time to time! I will be feeding the strips from two 36 amp x 12 volt power supplies with 5 strips per power supply. Fuse rating = ((Supply Current / 5)*1.1 (10% overhead for small surges) for each LED strip. Using this formula, we can now move on to LED Strips. The first morning after the first 10 beams ran burn-in brought the smell of burnt plastic, luckily, no fire. With the resistance of the wires and strip acting as a current limiter, the strip can overheat to the point of catching fire while the power supply happily continues to pump in the juice. If he is calling all of America racist then he is stereotyping (exactly what he wanted to avoid when directed at China). Green Lighting (10) Sensio (10) Thorn Lighting (2) Meridian Lighting (1) Unbranded (1) Colour. The products I linked are nice distribution blocks that take auto type fuses, and an auto fuse form factor 5 amp circuit breaker. Geez. Depends if you want one strip to go out versus all of them. The one Randy has referenced is known as a ATO/ATC size fuse and is shown on the left. At Novelty Lights, Inc., we pride ourselves in being the Christmas light and Outdoor String light experts with a sales staff that has years of experience with all types of Christmas and outdoor lighting projects Weâve got it all from the classic incandescent Christmas lights and the newer LED Christmas lights. DarekNorway has updated components for the project titled Vorender 5 - HT Core XY 3D Printer. Looking at it in the direction coming from the power supply a fuse only protects against shorts in whatever comes after the fuse. *It was rumored that the F-14 could be put into “oversweep” configuration while in flight putting the wings swept fully back — this was normally used for storing the airplane on a carrier flight deck since the wings didn’t fold upward — by pulling the breaker on the gear squat switches. However, this accessibility means that it’s easy to get in over your head and make some simple mistakes that could end catastrophically. That’s why the user needs to add the fuse. I still have the pictures and use them for training purposes occasionally. At least when its on a USB port there is usually some protection from significant over current – except on terribly cheap 12 port chargers which lack anything. So each led strip will be roughly 7 * 1.1 = ~7.7 amps per strip. Problem solved. Connect a negative wire to a terminal on the negative busbar in the power distribution panel. It seems like a design flaw in the strip itself, because the power leads are resistive enough to limit current, which means they’re resistive enough to produce I^2R losses even in normal operation. It must have a resistance of around 0.6 Ohms, and that’s very bad if you’re stringing them together end to end. DAYBETTER Led Strip Lights 32.8ft 5050 RGB LEDs Color Changing Lights Strip for Bedroom, Desk, Home Decoration, with Remote and 12V Power Supply 79,065. If your load is 5 A, a 7.5 A twin blade automotive fuse would work well for each branch. This site uses Akismet to reduce spam. Just because someone isn’t personally responsible for societal problems doesn’t mean they can’t contribute to them, due to the nature of participating in society. 24 (4) 12 (1) Type. You plug them in place of the original fuse and then connect the power wire. You want 12 volts if your car has a 12-volt battery (most do). DarekNorway has updated the project titled Vorender 5 - HT Core XY 3D Printer. Products per page: Sort: View. Just add some terminal strips and you are basically making your own version of the first item. Step 4: Tap the LED daytime running lamp to the fuse box by finding the ACC 12V switched power [difficulty: ****] a) Open your fuse box and try see if there is any unused 4-pin mini or 4-pin micro relay sockets. I’m not an electronic engineer but at school they teached us to use fuse in everything we make. I just ordered two x 6 position ATC style fuse holders like these: http://www.amazon.ca/Docooler%C2%AE-Circuits-Blade-Holder-Vehicle/dp/B00V65PLAC/ref=sr_1_3?ie=UTF8&qid=1452143301&sr=8-3&keywords=Docooler+32v+fuse+holder. You cannot calculate this since you have only supplied 1 ⦠http://navyaviation.tpub.com/14315/Figure-2-8-Wing-Oversweep-Position-Manual-Control-F-14-55.html, The push-to-reset fuses are nice and the voltage rating doesn’t matter, it’s just about the current. If the fuse is properly working, a red LED will light up at the top of the device. You will need to remove a screw or nut under the dash that is a metal ground point. Absolutely! Been there, done that. Use a sharp knife to make a slit along the black lines between the light and the end of the LED strip. After that, the boards didn’t even get more than 10 degrees above room temperature. This one Im using now is the best. By using our website and services, you expressly agree to the placement of our performance, functionality and advertising cookies. For 5V strips, voltage drop across the fuse can be an issue – TI do some really nice USB port protectors which are basically electronic fuses with resistor-programmamble current trip. As you can see in the diagram, the led strip on the passenger side connect to the extra wire length and then get tapped into the led strip on the driver side, then the driver side LED strip gets connected to the extra wire length that goes through the firewall and inside the car under the steering wheel above the pedals. 1 / 2; Filter by. So each led strip will be roughly 7 * 1.1 = ~7.7 amps per strip So Jim (Soo Line) has it about right. (usually near the fuse box is one with a bunch of wires fastened to it) Crimp on a U or round connector to the black wires from the lights. Protection needs to be at the PSU end. Can’t help but feel it’s a little fucked up / racist for us to drive up the demand for ultra-cheap manufacturing, outsource it ourselves, refuse to produce anything domestically, hire indentured servants on starvation wages, and then insult them and the country which manufactures everything we own. place it between the power supply and the first led. (had) Zip ties. Thankfully, the solution is simple. And where do you add this fuse? Fortunately their color temperature does not change when they are underdriven. Fuse rating = ((Supply Current / 5)*1.1 (10% overhead for small surges) for each LED strip. I will be using it on my devices to help keep everything balanced. Please be kind and respectful to help make the comments section excellent. Other than that, a LED strip is typically quite robust. This one breaks the input up into 6 fused circuits, but they have bigger ones as well (but 6x 5 amp circuits is about as much as you'd want to put on a single 36 amp power supply). Wiring a white LED strip (or any other strip of single-colour LEDs) couldnât be easier.Simply connect your 240V mains supply (+ve and -ve cables) to the input terminals of your LED transformer, and connect your LED stripâs starter-lead (+ve and -ve again) to the transformerâs output terminals. They’re quite bright and draw significant amounts of power, each pixel drawing up to 60 mA at full-white. outlining a common mistake made when building with LED strips that is really rather dangerous. A cheap fuse could be at the end w the cabling. I have ordered a total of 10 x 5m 5630 natural white LED strips with 60 LEDs/m. If no light appears here, then it means that your fuse is blown and can no longer be used with the lights. (Comment Policy). Since your supply current is close to demand + small overhead, you just need to divide the current by 5. The WS2812 has allowed the quick and easy creation of addressable RGB installations, revolutionizing the science of cool glowy things. Except that the terminal block connectors the designer specified were only rated to 18 amps. why not check out these eyeball-searing 3 watt addressable LEDs? More questions from he who knows just about nothing re electricity. LED strip adhesive is losing adhesion If parts of your LED strip are falling from their mounted surface, you may have used an LED strip with insufficient double sided tape. Why use 12V when 2 or 3 is the need and waste 3/4s of the energy to install energy efficient lamps? MR subscribers, check out the new All-Time Digital Archives, http://www.amazon.com/Blue-Sea-Systems-Blade-Block/dp/B000THQ0CQ/ref=pd_sim_200_3?ie=UTF8&dpID=51%2B5nXsWtYL&dpSrc=sims&preST=_AC_UL160_SR123%2C160_&refRID=0TXR93P5DSV6JV3VE8R1. I bought a lighter from a Chinese vendor and when I held it at my curtains for a while my curtains caught on fire. You can consider reapplying a new layer of double sided tape, or using some mounting brackets and screws for a more permanent mounting method. LED Striplights (14) LED Flexible Strip (5) But you have to keep it safe and fusing and wire size is so so very important. Strip color options include pink, UV (blacklight), blue, green, yellow, amber, red, and orange. And I wonder if I will ever get it fully going. Armed with this knowledge, you can now safely play with LEDs instead of fire. Wouldn’t this be better solved by manufacturers just integrating resettable fuses in the actual strips? Wiring a 12V light from a 12V battery bank through a 12V fuse block is pretty straightforward. There has been around 4 versions of my fuse layout. Contact us for more information. Cut a gap in your wire in a spot where the fuse can fir easily near the battery under your seat. Then a ground wire is tapped-in into that same extra wire length on the - ⦠Resettable fuses are really expensive. So, the 24v 40A power supply feeding the breakout board could easily supply the required 27.5 amps of current, so no problem, right? http://www.optifuse.com/PDFs/FuseSelectionGuide_RevA.pdf, "One difference between pessimists and optimists is that while pessimists are more often right, optimists have far more fun.". Sorry, somehow I missed your last post on the wire gauge thread. Sort of like if you want the one block on your layout to go down, versus all of them. You can’t make comments like that without considering the circumstances that led to these situations. A technician told me the TESLA Model 3 does NOT have a fuse box so the LED light strip would have to be turned off manually (via remote). same would apply here: here 60A fuse directly behind the psu would only protect the cables behind it, but it would not blow in the error i show in the video. Nay every fule noes that.. With a few LEDs, dropping resistos make sense. These: http://www.amazon.com/Blue-Sea-Systems-Blade-Block/dp/B000THQ0CQ/ref=pd_sim_200_3?ie=UTF8&dpID=51%2B5nXsWtYL&dpSrc=sims&preST=_AC_UL160_SR123%2C160_&refRID=0TXR93P5DSV6JV3VE8R1. Don - Specializing in layout DC->DCC conversions. 12V push-to-reset breakers are cheap/easy to find have been used in vehicle applications for decades, and can be gotten with a “pull off” feature so you can manually open the circuit. Modeling the Reading Railroad in the 1950's. 5V winds up being a bit harder since there aren’t easy vehicle parts to use. With folks stacking 64 bit processors, why can we not see the responce might be, a dc-dc convertor to drop V to led use? Instructions say, scratch 1 ribbon away for each foot of led strip that you cut away. Last edited by ghbzorro; June 29th, 2012 at 03:47 PM . Use your wire strippers to remove maybe 1/2â of the wire sheath and twist together your wire and those from one end of the fuse, then use electrical tape to secure the connection. Those strips are very thin. Re: What amp fuse for a 12volt led strip light? Resettable (PTC) fuses add a significant resistance (and therefore voltage drop) to the circuit. It’s a great explanation of a common yet dangerous problem, and [Thomas] backs it up by using a thermal camera to illustrate just how hot things can get in mere seconds. Brand. That's probably the easiest way to go without rolling your own breaker panel. Imagine a home or car with only one circuit breaker. Coming into my main splitter I have a double 40A fuses My system is a ongoing and growing system. Typically, LED lights are Diodes which are sensitive to polarity (+ vs -) you can blow them if you connect incorrectly or if you over-power the circuit. Similarly, place such fuse-ribbon at 1 ft intervals. SUPERNIGHT LED Strip Lights - 5M/16.4 Ft SMD 3528 RGB 300 LED Color Changing Kit with Flexible Strip Light, 24 Key IR Remote Control, Power Supply 4,063. 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I don't want to run the wire straight to the maplight and I saw on a tutorial that I can connect it to the fuse box. this is basically how (LED) christmas lights are strung. In the house i live in are multiple fuses: 3 big ones where the energy comes in (3x 80A my case – 3phased system ) .. then there is a fuse in front of my counter with 3x32A and from there is a cable comming into my flat with multiple fuses @16A for the actual rooms/users. Wire, should use black and red for easy identification. Optional: DC 12v switch for inside the cab. Efficient LEDs sit on a 10mm wide circuit board, offered in 3ft to 16.4 ft lengths. Ps if you are using a led strip then it should already have resistors wired into the circuit. Idiot resistant. This would lead to reduced brightness (or total failure) of the LEDs on the far side of the strip. How to Wire a Relay for Off-Road LED Lights â Extreme Lights Do I need to install circuit breakers or fuses for each of the 5m strips? or buy an add a fuse kit from the auto parts store. For 12 and 24V, IR do some nice automotive high-side protected switches, e.g. So adding a fuse next to the power supply is probably the better option. This would suggest, then, that a 4.16 Amp fuse would be acceptable. I have discovered a new IC, at least for me, The 5A Hall Current Sensor Module ACS712 Thomas wrote a reply on Hacking a iMac G5 into an HDMI monitor. If there is ever a short in the wire somewhere between the fuse and the power supply the fuse does nothing to protect you and your house may burn down. …and hurt their bottom line? Thanks for making america great with your comment. We should ban China and build our own government controlled 5G network based on Donald’s personal design is what we should do, that’ll show them commies am I right? Nice article. There is a lot of slitting in the panel. I want to install LED light strips across the front dash in the air vent slot but I want the lights to TURN OFF when the car TURNED OFF. Single-color LED strip lights are also available in cool, natural, and warm white. a 560 ohm resistor after the fuse will current limit enough to supply good life out of your leds. I really like the lower voltage, The leds last so much longer. I type one thing and see the right thing on the screen and when it gets printed on the poset there are always words that are changed. It is rated “12V/240W” But it has lower voltage, more so at the end of the rails, so lamps with a combined power of 240W draw much less than 20A, the transformer delivers less power – for even much less light. Wow I don’t understand how spell checker is supposed to work in here. I read and reread and read again. 6% failures after 100h of white (sample size ~600 leds). 99. Nilight - NI -WA 06 LED Light Bar Wiring Harness Kit - 2 Leads 12V On Off Switch Power Relay Blade Fuse for Off Road Lights LED Work Light, 2 Years Warranty $10.50 Alpine iLX-W650 7" Mech-Less Receiver Compatible with Apple CarPlay and Android Auto Flexible LED strip lights have many features that make them easy to use in a variety of situations: A 1 amp fuse will suffice for your exercise. They can make it so simple! ______ Christmas Lights Rope Lights | String Lights & More . Fuses/circuit breakers for LED strip lighting? Identify the fuse for the wiring circuit you plan to tap into, and remove the fuse. Do this on both sides, so the fuse runs seamlessly. Some that I know will be drawing more then 5 Amps I would of used thinker wire and larger fuses. Modern LED strips are magical things. Breaking up a system is more work but is easier to diagnose if a fault occurs. If true, I don’t think I’d care to be the first to try it in actual flight. Cheaper to just settle the cases that actually make it to trial after the fact. Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more. Adding a fuse in the lead to the strip (and precisely calculated) is the best option. Going into Relays 30A to 40A To aid in the resistance issue across the end to end boards inside the beam, secondary cables ran along the inside of the beam to provide a direct connection to the 24vdc source directly to sections half way down the beam. He didn’t do all those things. I want to connect the footwell lights so they turn on/off when I open/close the door just like the map and dome lights work. manage your account online and more! See people doing dumb crap all the time with high current power supplies, no protection and their own circuits. then from there it goes to 15 fuses of 5 amps and 5 fuses at 7 amps. Slide the end of the strip into one end of a connector clip and snap it shut. Car LED Strip Lights, 4pcs 48 USB LED Interior Lights, Multicolor Music Car Strip Light Under Dash Lighting Kit with Sound Active Function and Remote Controller, ⦠( approximatly 15A ). If he is calling the original commenter racist, then my original current stands. I hate this. This means itâs possible to ⦠The company that developed the design (for the architectural firm hired by the store) made breakout boards to supply power to 5 beams for the required 24 hour burn-in. It’s not suggested it come with the strip – it’s suggested that it should be designed into the final project by the end user. Right, because people that buy a LED string that draws many amps and then don’t take the right setup to power them it’s the fault of the LED string supplier? LED strips should be connected equipotent as on this image It happens way to much. and slitting – splitting. Login, or register today to interact in our online community, comment on articles, receive our newsletter,
After 10, 100, 1000 leds? Tap into the wiring circuit, using a pinch-type splitter to connect a length of wire to connect to the LED lights--simply insert the wire ends into the splitter and pinch closed. They must be used with single-color accessories. The red wires need to be connected to the fuse box. It’s here that the problem starts. Fusebox wiring adapters make it pretty easy to tap off of a power circuit for installing LED lights. The size on the right is know as a mini fuse and has replaced the ATO/ATC style. The transformer also delivers lower voltage than rated – 11V to 11,5V. OK, sure. There are 2 main ways to power your LEDs from the fuse box: 1. LED strip lights, also known as LED tape lights or LED ribbon lights, are known for their low-profile size and flexibility. – there are things like the LTC1153 programmable, polyfuses and the like but once an installation is in and running properly (read “you’ve done all the accidental smoke letting”) inline tube fuses are good enough. UL521204-30 120" (3m) UL LED BLUE lighting 7.2W 30 LED/m $30 US (in the bad sense) A project at my employer a few years ago involved 3 watt RGB LEDs, 4″ apart, on a beam structure that would end up being 23 feet tall for a video/media facade for a 3 story clothing store on New York’s 5th avenue. It can better but my guess it adds too much cost to the product. In an unattended installation, things could be far worse. That makes strip’ resistive voltage drop same for each LED. If tapping off of the fuse box consider picking up a fuse wiring adapter. I’ve used 100s of reels for 1000s of LEDs and only ever had 3 faults, and they were all a missing/broken colour inside the die, but they never hampered functionality. Not Chinese crap but more accurately named: I have a 12V lighting system threw out my house I'm just a dude with a bad back having a lot of fun with model trains, and finally building a layout! Typically, a single strip will need a 5 Amp fuse, two together would require 7.5 Amp, and three would need a 10 amp fuse. I don’t see, why LED lamps should last longer, they normally have a constant current driver anyway. White (3) Voltage. It might be an interesting project to build a temporary fuse “black box” to allow safe project fiddling while still on the bench – most people don’t bother with overcurrent protection at all, and the hazard is leaving something running while unattended. On almost every line out I have them fused at 5 Amp In-line fuse holder and fuse; Relay; You can buy a 5-meter roll of flexible LED strip lights for less than $10 on places like Amazon and eBay. This time I'm asking about circuit breakers for the LED strips. (had) Spare fuse just incase. In reality the only reason seems to be that the manufacturer can overrate the transformer. Seems pretty damn ungrateful. When I connect the LED to the light that's in the fuse box, can I just strip both ends and tie them? Thanks for that, I was looking to do the same with my LED strip light. And we cant forget about communication wiring. I have a 12V lighting system, originally with halogen lamps. Typically, wires used to hook up the LED strips are quite thin and the flex strips themselves have a significant resistance, too. This is not possible with ready made flex strips with ws2812 leds and does not change anything on the focused problem i have shown in the video. (one for each strip). 16' @ $10.99 bought from amazon. A fuse integrated in the strip itself would also not help against faults in the wiring leading to the LED strip (e.g. By installing an appropriately rated fuse for the number of LEDs in the circuit, the installation becomes safer, as the fuse will burn out under a short circuit condition even if the power supply is happy to supply the current. Fuses fuses and more fuses. The draw will be 5 amps @ 12 volts per 5m strip. Yes I can make comments like this because he said, “it’s racist for us”. A 1amp fuse trips at 1.6 amps in about a second. My guess is that the power source has blown, (since the leds will require a DC input. How to wire up led lights with a battery basic wiring you must use a resister to lower the power and must send the current in a circle ( light, sockets, cooking, etc ). The assumption he did is what makes all these unending political arguments. at the solder points to the strip).