Your car or truck battery may appear dull and non-threatening, but it is a potentially life-threatening storehouse of electrons looking for any way out at the speed of light. Based on the table above, each transformer draws 700mA, each Superflux LED draws 80mA, and the LED strip draws 80mA. Do I have the wrong rocker switches? The load side of the cab switch goes to terminal 86. This website uses cookies to improve your experience. If each light draws 0.5a, for a total of 2 amps, you can use a 3 to 5 amp fuse. You’ll be fine with a 0.5 amp or 1.0 amp fuse. Therefore, for a large light bar you can use a smaller cab switch and smaller wire on the switch circuit. This greatly reduces the risk of shorting the battery, which is both exciting and very dangerous. 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. Besides wiring to the car battery, I’m to tap in my under-dash fuse box’s rear power outlet using a Add-A-Circuit fuse tap. 300/12=25amps. The FUSE size for that Factory wire has already been determined and should NOT be increased! A fused wire runs between the positive battery terminal to relay terminal 30. Once your LED light bar has been properly wired, you can drive with confidence knowing that your bright, night-splitting LEDs are getting all the power they can consume, reliably and safely. The fuse rating is a valuable piece of information because it helps you to protect your electrical circuit and therefore should never be neglected. Free shipping . The 42 inch light bar is supposed to be 240W and the wiring kit is a 300W wiring kit. Most people get caught up on fuse wire size but once you get the hang of it, it shouldn’t cause too many headaches. It’s been very confusing because everyone has a different take, so I really appreciate from manufacturer’s answers. Be sure the relay power capacity exceeds the amperage of your light bar’s maximum current draw. Anyways what size HID ballasts do you use? Will this be an issue since the wire will go from 16 down to 10 right out of the circuit? Fortunately, you already know how much current your LED light bar requires. Guest. I recently bought: • Flush Mount LED Bolt Cool White, Aluminum (1W), 11 mm (4 pairs) = don’t require fuses. If you have no wiring harness, use a relay if your light bar draws over 5 amps. Route wire away from high heat areas. It is composed of what should be 96 7 watt LEDs. So, you can easily choose the size of wire to feed it safely. Below is a list of automotive wire sizes and their safe current ratings. How to install Corvette LED interior lights for C5 or Z06, On/Off Switch & LED Rocker Switch Wiring Diagrams. Proudly powered by WordPress | Theme: Bulk. Thanks. Your email address will not be published. Amperage is determined by W/V, so if the wattage is 150 and you are running it on 12 volts, it is 150/12. Watts ÷ volts x 1.2 = fuse size in amps required as a general rule. So Im running a Fuse Relay Block that has 6 relays those 6 relays will power 6 different LED Light Bars for off road.. Enhanced Quality - The YITAMOTOR Wiring Harness features heavy duty … The main function of a fuse is to protect your wiring, but in order to do so, you’ll have to get the right fuse wire size from the start, too low and it’ll blow, too high and you’ll end up doing damage to the whole circuit! Accept Read More. I have a 40 amp relay, is that ok! New HD 300W 12V Wiring Harness Kit 1 Lead LED Light Bar Laser Rocker Switch. Hey Noland, If the outlet cover says 12VDC 120W max, then that means you shouldn’t plug in devices that consume more than 10 amps. A rocker switch for each half (10 led lights, plus flasher) At times only one side will be lit, other times both at once. Because the length of the cable run is relatively short at less than 10 feet, you’d be safe using a 16 gauge wire. The terminals have a standard numbering scheme. Actually, the load of the circuit should have nothing to do with choosing a fuse size. Use the following table to determine the maximum current for whatever wire gage is being used. Enter your model number to make sure this fits. These cookies will be stored in your browser only with your consent. The rule of thumb that we use here would be “Continuous Watts / Battery Voltage times 1.25, for example a typical 1000W 12V inverter draws up around 83 continuous amps and we would add the 25% safety factor which comes out to 105 Amps, so we would recommend a 150A fuse.This is a brief introduction … 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. For one, a 12V battery isn’t always going to be at 12V. The FUSE size for that Factory wire has already been determined and should NOT be increased! Read honest and unbiased product reviews from our users. Thanks. Why hasn’t my current 7.5A fuse blown yet? So if you take the worse case low battery scenario (10V), then I think that you would actually get a 15A draw RMS. This provides a greater margin of safety. It doesn’t make sense to wire them in series. The top row is the number of amps applied to the wire. I assume that means I can wire it up 12v just fine. Disconnect it. Tip #7: Add a dual waterproof connector near the light bar for easy disconnection when the light needs to be removed. Your car or truck battery may appear dull and non-threatening, but it is a potentially life-threatening storehouse of electrons looking for any way out at the speed of light. Cross Reference that fuse size to verify that it’s below the Maximum fuse size called out by this chart. We don't know when or if this item will be back in stock. Matt. So Norman Keene if i want power a 150 watt small heater and I divide watts into volts in my scenario 12 volt my math comes out to 15.625 amp fuse ?would I use a 15 amp fuse or go to 20amp fuse. 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! Tip #8: Use separate wire colors for different circuits so they are easily identifiable.

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