Tip #5: Wrap electrical tape snugly over connectors without stretching or it will slowly unravel later. If you do have a fuse, and there’s a short, the fuse will blow before letting too much current through your wires. This website uses cookies to improve your experience while you navigate through the website. You install a fuse to PROTECT the WIRE!!!!!! Easy install and will protect your led light bar. Unlike water hoses, however, pushing excessive electrical current through a wire that is too small will melt the insulation or cause a fire. The following formula will give you size fuse you need. b) Amperes hour consumed if the daily use in 3 hours(assume system losses are 15%), I bought three 1 watt screw led amber lights from you and wired with an add a fuse to my fog lights. MicTuning heavy duty 2 lead wiring harness with water-proof red on/off toggle switch and easy to install. If there is some pre installed factory wire and you have changed the lights. Automotive relays are inexpensive and most handle 40A of current, which is more than enough for even large LED light bars. Adopt 14 Gauge flexible strand copper wire,up to 300 watt load capacity.It is universal fit for any 7" 10" 12" 20" 30" 40" 50" light bars that is within 300w. The fuse size is usually stated in the manual and most inverters already have built in fuses/breakers. To calculate the best fuse size, you must first figure out how much current your LEDs draw. I ordered a better one that had 14 gauge wire and supported up to 300W. If I’ve missed anything or left anything out, please correct me through PM, and I will correct the tables. I’ve seen battery voltages on vehicles fluctuate between 10V-13V. These grades have a higher temperature range and better resistance to solvents and other chemicals. I have a 120 VAC 60 HZ 12 W transformer with an output of 15.95 VDC 8.4 output to charge a battery that has 13.2 V battery. Comment Report abuse. The diagram below shows the bottom side of a standard 12VDC automotive relay. Terminal 85 connects to a vehicle ground point. For this application, you only really need one fuse. If you want to put all of these on a single circuit, you’ll need to know the current. Route wires along firewalls or the vehicle chassis. Calculation: 1500W / 12V = 125 Amps, but you should add a bit of a buffer (about 20% more), so a 150 amp fuse is perfect. Your This item: MICTUNING HD 14AWG 300w LED Light Bar Wiring Harness Fuse 40 Amp Relay ON-OFF Rocker Switch Blue… $19.99 In Stock. 2×1.25 = 2.5 then we will round up to the nearest fuse size (in multiples of 5 amps) which would call for a 5 amp fuse. Because the length of the cable run is relatively short at less than 10 feet, you’d be safe using a 16 gauge wire. I am installing a pair of OZ Amber Mini Trail Lights on my motorcycle. Accept Read More. If your LED lights bars draw a total of 1500 watts, then I suggest a 150 amp fuse. A 12v domestic R solar electric has three 10w lamps and 30w black and white television.Determine the; a) Size of a fuse required. If each light draws 0.05a, for a total of 0.2a, you can use a 1 amp fuse. Do the right thing and protect your circuit. I am installing a 20 amp max marine waterproof 12VDC socket above my rear bumper for accessories such as a tire inflator (15 amps). ( watts divided by volts times 1.25 ). Auxbeam LED Light Bar Wiring Harness Kit 12V 40Amp Fuse Relay ON/Off Switch for Driving Light Fog Light Work Light (2 Lead) 4.5 out of 5 stars 249. We also use third-party cookies that help us analyze and understand how you use this website. Anyways what size HID ballasts do you use? All my wire gauges are 22AWG. Don’t worry if you’re lost, you’re at Oznium, we’re helpful here. Heavy Duty Wiring Harness Kit For Led Light Bar 300w 12v 40a Fuse Relay On/off Switch Relay 14awg 12ft Length Universal Fitment , Find Complete Details about Heavy Duty Wiring Harness Kit For Led Light Bar 300w 12v 40a Fuse Relay On/off Switch Relay 14awg 12ft Length Universal Fitment,Led Light Bar Wiring Harness,20 Inch Led Light Bar,Fog Light Wiring Kit from Auto Lighting System Supplier or … I have a 22 inch 96W light bar with a relay wire harness With an in-line fuse and an on/off switch. You should not run ANY SIZE fuse for your 150 watt LED or to “get the most out of it”!!!! You can disregard the recommended fuse size of 20a for your rocker switches. I have a 40 amp relay, is that ok! 25 amps and could be fitted with a 13 amp fuse, if the lamp develops a fault there’s a good chance the cable will melt before the fuse blows and could even cause an electrical fire. First time build so I am trying to make sure I don’t do any shortcuts. 2 x 55 watt lights on a 12V system will draw about 9 amps. Helpful. The load side of the cab switch goes to terminal 86. Most people get caught up on fuse wire size but once you get the hang of it, it shouldn’t cause too many headaches. The inquiry I get from other people is what is the new outlet going to be used for. One way to find out the actual current draw is with a multimeter / amp-meter. Your LED bolts draw about 37 mA @ 12VDC, so 4 of them draw 37 x 4 = 148 mA Your LED navigation lights draw about 125 mA @ 12VDC. Thanks Phil for your wonderful and detailed explantions! You should put the fuse(s) as close to the battery as possible on the positive wire. Do not take shortcuts. Offroad Driving LED Light Bar Wiring Harness with Fuse Relay ON/OFF Switch for Light Bar Fog Lights, ATV, SUV, Jeep, Pickup.The YITAMOTOR heavy-duty light switch wiring harness is designed to connect LED light bar within 52 inch to your Auto electrical system and compatible with any off-road light bar, work light or auxiliary lamp. If it blows, you can always replace it with a higher rating (I’d suggest about 15A). Tip #8: Use separate wire colors for different circuits so they are easily identifiable. I want to install an additional 12VDC 15A outlet in my car. Switch->relay, relay ground->chassis, battery->fuse->relay, light bar ground->chassis, relay->light bar positive. Ive just had an electritian use 12 gauge wire on a 12v set up on a RV im building. Learn what a relay is, how it works, and why you should use one. Your local auto parts will have GPT wire but probably not GXL or TXL grades. It is universal suitable for driving light, fog light, work light that using 12V DC power supply. Many people make the analogy that electrical current through a wire is like water through a hose. What size of wire and fuse should I use please? Firstly, thank you for your purchase of our LEDs for your boat. Then after much comparison shopping I ended up getting a 20-inch Rough Country Black-series Light Bar along with a smaller 8-inch Black series light bar to embed as a hidden install in the hood scoop. Avoid splicing wire when possible. The cable run from the battery is approximately 15 feet. To check whether a fuse blows at a certain current, you need to run different currents through it until it blows. utility and captive; rural electrifiction; news; press; contact us; home; about us. It’s also a great idea to get an ATC fuse holder to protect and mount your fuse. You’ll usually find the fuse rating on the side of your fuse, which will be given in amps. For Honda Civic 2004-13 9005 9006 LED Headlight Bulbs High & Low Beam Combo US. Guest. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. However---Many of the LED light bars from China (for example, on eBay) have specifications that are HIGHLY over-rated. Your switches will also function just fine without a fuse. I just think it’s important that NO ONE thinks a fuse size is rated only for the loads it it supplying power to. When the 42 was hooked to a new wiring kit separate from the 50 inch the wires started getting hot after 30 seconds to a minute of the light being on. Fortunately, you already know how much current your LED light bar requires. They are .05a each x4.position pods by alpena.I will use 1amp fuse. Why compromise that with leaky connectors? DO NOT EXCEED THE VALUES ON THIS TABLE! A lot more can be said in regard to how to wire an LED light bar. ): At 14v, 100W will draw about 7.14 amps (and your 7.5A fuse might not blow). It is composed of what should be 96 7 watt LEDs. Thanks. Thank you very much. Save my name, email, and website in this browser for the next time I comment. 10 watts at 12 volts is equivalent to 0.833 amps, so yes, a single 1 amp fuse should be fine. Look for quality watertight wire connectors in a local marine store. 2) Does the inline fuse go near the socket or the battery? Run is less than 5 feet. AU … It doesn’t make sense to wire them in series. And not from the devices? Find the size of fuse by multiplying the amps required by the device (2) by 1.5. I’m kinda rusty on my electronic principles but given P=VI > P=12 x 15 > 180W. Learn how to wire a relay for off road LED light bars and work lights. This provides a greater margin of safety. Tip #1: Please do not skip over this section unless you have a great deal of experience with electrical wiring and components. I’ve read, prior to finding this website, that the wire gauges people used ranged from 12AWG-18AWG, According to your chart, I should be using a 12AWG, which a lot of people say it’s overkill. Auxbeam Wiring Harness Two Leads Auxbeam universal harness kit with mouse style switch, can wire two lights meanwhile. And what size relay? The Fuse Relay Holder has a Positive and Negative side. Please double check the actual current draw. Ex: 5A,10A,15A,20A. If we assume your “150W” light bar only draws 100W (it might even draw less! Total 2M in length, meet your needs for mounting your lights anywhere on the vehicles. AU $30.88. DC12V 40A rated automotive relay Up to 180W load … The fuse rating is a valuable piece of information because it helps you to protect your electrical circuit and therefore should never be neglected. 4 x 3.6 watt lights on a 12V system will draw about 1.2 amps. The relays are switched via a cab switch whose circuit carries less than 1A. The outlet covers say it’s a 12VDC 120W Max. DETAILS MAKES PERFECT: adopt flexible strand copper wire,up to 300 watt load capacity.It is universal fit for any 7" 10" 12" 20" 30" 40" 50" light bars that is within 300w GREAT CONSTRUCTION: 40A Power Relay and Inline Blade Fuse for multiple safety protection.It is 1 lead that with one lights output connection,it can hook with 1 heavy duty off road led light bar above 180w This category only includes cookies that ensures basic functionalities and security features of the website. New - 30 Inch Marine Curved: Black Oak LED Pro Series 2.0 Double Row LED Light Bar - Combo, Flood, or Spot Optics (180w/300w) List Price: $775.00 $658.75 Price: $658.75 & Free Shipping When directly switching a light bar, use a switch with a minimum 10A rating. Say you bought a cold cathode kit for each side of the dash (2 Transformers), 5 superflux LED’s for your vents, and a 4.7″ Flexible LED strip for your center console. phone charging, small fridge. Will this be an issue since the wire will go from 16 down to 10 right out of the circuit? The voltage of car’s battery fluctuates from about 11.5 to 14 volts, depending on whether the car is running or not. confused. I’m installing 4 small auxiliary lights on my Jeep as rock lights. Take the maximum current value obtained from the table and find the largest fuse you can find that still falls within the limitations. What size fuse should I use for the led. Necessary cookies are absolutely essential for the website to function properly. Perhaps you mean each one draws 0.5a @ 12v? Both the LEDs and rocker switches do not require fuses. If the wire shorts out and has too large a fuse installed it could melt the insulation right off the copper conductor and get so hot that it could start something on fire! If you want 12v ignition on power only, use a relay and 12v + signal from an ignition on positive lead. The left column is the length of a wire, in feet. Do not take shortcuts. That being said, it is best practice to install a fuse on your circuit. For instance, red for the wire from the battery to the relay, black for ground wires, yellow for a wire running from a relay to its switch, and so on. Before you start, disconnect the vehicle battery. Here are some of the features of your new Light bar: 300W LED Power; 20A@12V,9A@24V LED Current Draw; 18000 Lumens to light up the night; IP 67 Waterproof rating - See more about Waterproof LED Lights; 10v-30v DC Operating Voltage; This 50 Inch LED has 100 3 watt, high intensity LEDS; The housing for this LED Light is Die cast Aluminum; The lens material is Polycarbonate; Aluminum end mounting … Learning how to wire and LED light bar correctly ensures reliability and avoids unsafe operating conditions or damage to your vehicle. Its possible your light bar draws less than 150 watts of power. Each light draws about 37 mA @ 12vdc, so thats a total of 111 mA (0.111 A) A 0.5 amp or 1.0 amp fuse will work fine. Therefore, for a large light bar you can use a smaller cab switch and smaller wire on the switch circuit. Sold by MICTUNING® Direct and ships from Amazon Fulfillment. One common misconception about choosing the correct fuse size is that it’s dependent on the load of the circuit. They will light up and function just fine without a fuse. Read common questions and answers on ATC Fuse for LEDs, I have a question what size fuse in my car car should I run with a 150 W LED high beam and low beam Just want to know what size I should be running to get the most out of my LED headlights whatever information you can give me that would be helpful thank you. ... led light bar on my ingersoll tractor works fine just off tractor battery soon I hook power cable to battery I blow the light bar fuse I’m using a wire harness and relay cane in kit. You’ll be fine with a 0.5 amp or 1.0 amp fuse. Assuming you’re powering it with 12V, you should use a 35A fuse. Below is a list of automotive wire sizes and their safe current ratings. I also ordered a nice looking switch from the folks at CH4x4 that fit perfectly in the cab.

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