The relay I am using is the "Tridon Micro Relay - … Do you have to use a special dimmer switch for LED lights? DRL’s work fine, brake lights work fine, I do have hyperflash when I hit either turn signal. If you decide to run a switch for a light that has one on the light, leave the switch on the light set to “on.” Even if the light has a switch, you may still choose to run a switch into your vehicle. My Edge has a fuse for each individual light IIRC. If you’re unsure if your ride came with this feature or not, you can always unplug one of the tail lights and see if you trip the indicator. The only downside with this fix is that some of the newer vehicles do not use a flasher relay to coordinate the LED corner lights, instead it uses the ve- hicle's ECU (Electronic Control Unit). We use cookies to give you … Very few LED light bars draw enough power to need a relay. For proper function, the minimum load of the detector must be below the power of the connected LEDs. thanks! I have a 32"light bar that I am going to mount ahead of my windshield on the hood rack and I purchased the factory switch from local brp dealer , it has 4 starts on the back, I picked up some 16g wire/connectors and was going to tap into the accessory plug in behind the Center console , is it going to work without a relay if so anyone have a link I can look at ,thanks ..although, you could save a bit of wiring by keeping the relay closer to wherever you're going to power the switching from (85-86 terminals). You can use this simple formula to figure out what size fuse you'll need. According to the manufacturers specs it has 3Watt LEDs, and there are 24 of them. You will notice that the wire has 2 outputs, but for this LED light bar we will only need to use 1 output. The light in the dome light is a LED panel. 1 - doesn't matter because the heavier primary power wire will need to run the whole length from source to lamp anyways (30 and 87 terminals). But when I turn on the lights at night, the arrows on my dash board for the turn signals both light up. All interior lighting has been changed to LEDs (from incandescent bulbs), if that helps somehow. The other, important, reason relays are used is to keep high amperage circuits out of the cockpit/cab. Relay’s will resolve flickering issues and/or lights not turning on in most cases. If you are towing a trailer , you may not have LED bulbs in the trailer: Our flashers will work with (and can handle the load from) incandescent bulbs, so you do not have to worry about burning out your flasher. The equivalent of 10 amps, max. When directly switching a light bar, use a switch with a minimum 10A rating. I used a 4 pin 40 amp relay to power the light. I just installed a 40 LED 3 watt/bulb light bar. Do You Need A Relay For Led Light Bars. If you don’t, you shouldn’t need load resistors. LED lights to need their own special electronic dimmer switch to have a fully functioning and dimming light. If you’ve got multiple high-draw applications, you’ll probably want to add a distribution block with a fuse block and run a dedicated and individually-fused feed for each set of lights. the reason i understand this is done is so that small switches which would not be able to take the power load of lamps can be used. Re: Do LED fog lights need a relay with an aftermarket switch? For comparison, you can easily plug a 55W halogen into your cigar lighter outlet, since it's less than 5 amps. This brings us to our last solution to the hyper-flashing issue. do i need a fuse, and if i do what size would i need? To get that into amps we divide it by the input voltage. In some vehicles you can also disable DRL through the on-board computer. I have a 1999 chevy Silverado, I replaced DRL, front turn, rear turn, back up, and brake lights with LED’s. i am installing two fog lamps on a classic mini. How to wire a relay for off road led lights wiring led light bar relay harness for your lighting system led light bar wiring harness 12 awg. Whatever the leds are rated at times 4. Direct power from the battery and no risk of overheating the switch and wires. A standard dimmer switch cannot be used with an LED light as you will never be able to dim the LED light either completely or not very well. 72watts / 12VDC = 6A. If you put a 4 Ohm resistor in series with the LEDs, and assuming the LED lamp draws a generous 1 Amp, you get a power dissipation of only 4 Watts and a voltage drop of 4 … If your LED bulb goes out, you can simply go into any auto parts store and get a standard (non-LED) replacement bulb to get you going "legit" without burning up your flasher. If you are wiring up spot lights, connect a plug to each light. Here is a quick run through of which numbers correspond to which wiring location as well as a video tutorial on the wiring … In absence of a relay, the control switch is unable to handle the full current of the LED light and thus problems arise. Using Flashers with LED Lights Light-emitting diodes (LEDs) are used more and more in automotive lamps. A 55W LED is a whole lot of light (3000 lumens or more). Before we get started, take note of this relay diagram on how to wire up the switch to your LED light. A Warning Canceler and Relay Harness is highly recommended if your vehicle has daylight running lights (DRL). Relays and contactors allow for remote switching of loads and to switch higher voltages and currents than a small switch will safely control. If so, where would the - Answered by a verified Electrician. But that ignores the rest of the circuit and that calculator only works for a single component. The flasher relay does not get hot and is a PnP solution. If you had a jeep with lights all over it you needed a relay for the same reasons you need one for a winch. Today’s LED lights are a lot lower wattage thus you can get by without a relay a lot of the time. 1000watt HID will use a bit more than a 90 watt UFO, but a 240 watt LED is close to a 250 watt HID, so it is really a matter of total load and what the contacts of your timer are rated for. its supposed to pull a maximum of 120 watts. LED lighting..... 1-Do I need a fuse for led light strips if I use a power supply or an adapter? Whether you need a relay or not has nothing to do with the number of lights or the length of the lights. Another question from that question - wouldn't the stock fuse pop if too much current is going through it? Some vehicle’s electrical system may require a relay harness to cars with very small gauge wiring that cannot supply the initial surge current required to light the bulbs reliably. I am assuming you mean contactors. All the switch does is activate the relay and you won't have 20 feet of 14 gauge wire carrying the full load. Its working fine at the moment with the central locking switched ground and power but I have been advised by an experienced electrician that I MUST use a 4/5 pin Tip #6: If your LED light bar came with a wiring harness and it includes a relay, use it, end of story. If you do, your vehicle will require load resistors to be wired inline of the LEDs to simulate a … I understand the usual way to do this is to use a relay so that when a switch is turned on then the relay alows power to the lights. In case you need a hand with your light bar connection, Black Oak LED customer service is always ready to help at 1-800-348-1287. adding extra lights do i need relay - Hi I've added some extra vanity lights to use as footwell lights to my car interior's (Vw mk4 golf). LED bulbs use such little power that they won’t create enough heat to trip a standard thermal flasher. Need to know what HID compared to which LED. Motion detectors with a relay are also suitable for LED lighting. Regardless of what you choose, it’s of utmost importance that your wire gauge (AND relay rating and fuse value) is appropriate for the run length and amp draw. It is only a matter of Amp draw. Re: So Do Auxillary LED Lights Need A Relay. Now with the plugs that connect to the lights, if you are using a light bar, only one of the plugs needs to be connected. Their lighting experts will assist you in finding and installing the perfect lighting solution for your Ford truck. They have a very long service life, extreme vibration resistance, and use considerably shallower packaging compared to other bulb-type assemblies. I wired my light bar up just like i would for any other auxiliary light. So 24 x 3 Watts = 72 Watts. Another thing one can do is actually measure the current used by the LED's. Being that LED lights use far less power than standard automotive bulbs, if you plan to install LED lights as blinkers/turn signals, you should replace the standard thermal flasher relay with an LED or electronic flasher relay. Your vehicle requires one set (two harnesses) of either a CANBUS Warning Canceler Cable or Warning Canceler Harness with a Relay … The tech specifications on it states that the amperage draw on the LED lights are too low for the existing flasher(s) to pull in and work properly. If you have no wiring harness, use a relay if your light bar draws over 5 amps. Many electronics have some variation of a relay inside. The second plug can be taped up out of the way, or you could use this wire for an additional light bar. masuzi November 23, 2018 Uncategorized No Comments. Relays can be used to switch a low-current trigger to high current, switch a circuit on or off, reverse polarity, and much more. I'll also be re-wiring these tail lights via a relay on a dedicated circuit, so as to not overload the existing wiring. Re: So Do Auxillary LED Lights Need A Relay. If you opt to wire the light to a switch on your dashboard, however, the installation will be a bit more in depth. For some reason i cannot get the light bar to fire up with the relay … For motion detectors with an electronic switch you have to pay attention to the compatibility for LED lamps. If a device malfunctions, or a short were to occur in a higher amperage device, the fire and smoke will be away from the user/driver. Why do you need a relay harness to "protect" your wiring from drawing too much power, when the stock bulbs are 55w/65w? Do You Need A Relay For Led Light Bars. 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