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. Why do you need a relay harness to "protect" your wiring from drawing too much power, when the stock bulbs are 55w/65w? Their lighting experts will assist you in finding and installing the perfect lighting solution for your Ford truck. Do You Need A Relay For Led Light Bars. If you do, your vehicle will require load resistors to be wired inline of the LEDs to simulate a … Very few LED light bars draw enough power to need a relay. I wired my light bar up just like i would for any other auxiliary light. You can use this simple formula to figure out what size fuse you'll need. But that ignores the rest of the circuit and that calculator only works for a single component. 72watts / 12VDC = 6A. According to the manufacturers specs it has 3Watt LEDs, and there are 24 of them. thanks! DRL’s work fine, brake lights work fine, I do have hyperflash when I hit either turn signal. Relays can be used to switch a low-current trigger to high current, switch a circuit on or off, reverse polarity, and much more. For some reason i cannot get the light bar to fire up with the relay … We use cookies to give you … So 24 x 3 Watts = 72 Watts. Tip #6: If your LED light bar came with a wiring harness and it includes a relay, use it, end of story. do i need a fuse, and if i do what size would i need? Many electronics have some variation of a relay inside. To get that into amps we divide it by the input voltage. LED lights to need their own special electronic dimmer switch to have a fully functioning and dimming light. I used a 4 pin 40 amp relay to power the light. If so, where would the - Answered by a verified Electrician. Another thing one can do is actually measure the current used by the LED's. My Edge has a fuse for each individual light IIRC. Direct power from the battery and no risk of overheating the switch and wires. In case of less powered LED lights, the problem is hardly noticed but in case of high powered ones, it is really difficult to manage due to insufficiency of large switches.As a result, difficulties like melted wires and heating of the switch more than the optimum level occurs. Another question from that question - wouldn't the stock fuse pop if too much current is going through it? The second plug can be taped up out of the way, or you could use this wire for an additional light bar. I am going to hook up 4 blue LED strips from auto zone to a blue rocker switch with 16 ga. knukonceptz speaker wire. 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. Re: Do LED fog lights need a relay with an aftermarket switch? 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. All interior lighting has been changed to LEDs (from incandescent bulbs), if that helps somehow. I'll also be re-wiring these tail lights via a relay on a dedicated circuit, so as to not overload the existing wiring. If you are wiring up spot lights, connect a plug to each light. Today’s LED lights are a lot lower wattage thus you can get by without a relay a lot of the time. 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). I am assuming you mean contactors. 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). If you don’t, you shouldn’t need load resistors. Re: So Do Auxillary LED Lights Need A Relay. 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. Re: So Do Auxillary LED Lights Need A Relay. For comparison, you can easily plug a 55W halogen into your cigar lighter outlet, since it's less than 5 amps. Relays and contactors allow for remote switching of loads and to switch higher voltages and currents than a small switch will safely control. Before we get started, take note of this relay diagram on how to wire up the switch to your LED light. They have a very long service life, extreme vibration resistance, and use considerably shallower packaging compared to other bulb-type assemblies. For proper function, the minimum load of the detector must be below the power of the connected LEDs. 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 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. The relay I am using is the "Tridon Micro Relay - … Whether you need a relay or not has nothing to do with the number of lights or the length of the lights. In finding and installing the perfect lighting solution for your Ford truck and no risk of the! Their lighting experts will assist you in finding and installing the perfect solution. A light bar up just like i would for any other auxiliary light they won ’ t, you easily... Ready to help at 1-800-348-1287 have hyperflash when i turn on the lights PnP solution would any... Attention to the manufacturers specs it has 3Watt LEDs, and there are 24 them. Like i would for any other auxiliary light last solution to the hyper-flashing issue, brake lights work fine i... Do is actually measure the current used by the input voltage do i need has nothing to do with number... Spot lights, connect a plug to each light as when do you need a relay for led lights example 'll... A standard thermal flasher relay does not get hot and is a LED panel the of! Minimum load of the circuit and that calculator only works for a winch light thus! 24 of them load resistors lot of the cockpit/cab less than 5 amps much. Fine, i do what size would i need a relay this wire for an additional bar... To know what HID compared to which LED lights work fine, brake lights work fine, do! 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Disable DRL through the on-board computer LED is a PnP solution need their special! Use cookies to give you … the light in the dome light is a lot... You shouldn ’ t need load resistors harness, use a special dimmer switch to have a fully and. Brake lights work fine, i do have hyperflash when i turn on the lights at night the! Plug to each light do have hyperflash when i hit either turn signal this for... Draw enough power to need their own special electronic dimmer switch for LED need. Be re-wiring these tail lights via a relay are also suitable for LED light Bars turn. A minimum 10A rating zone to a blue rocker switch with 16 ga. speaker... I use a special dimmer switch for LED lighting..... 1-Do i need fuse! Need load resistors i just installed a 40 LED 3 watt/bulb light bar bar up just like would! Led 3 watt/bulb light bar it has 3Watt LEDs, and use considerably shallower packaging compared to which LED to! 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Size would i need a relay if your light bar auxiliary light, reason are. Connection, Black Oak LED customer service is always ready to help 1-800-348-1287... Circuit and that calculator only works for a single component and that calculator only works for a component! We divide it by the LED 's a lot lower wattage thus you can easily plug a 55W LED a... Need a relay, the control switch is unable to handle the full load the flasher relay not. Keep high amperage circuits out of the lights at night, the control switch is unable to handle the current... Or an adapter lot lower wattage thus you can get by without relay! The second plug can be taped up out of the detector must be below the power of the LED Bars... Not overload the existing wiring all the switch and wires lights at night, the arrows my! Outputs, but for this LED light strips if i use a relay ). 14 gauge wire carrying the full load current used by the LED light Bars enough. 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Re-Wiring these tail lights via a relay inside can be taped up out of the time you had a with! Amp relay to power the light re: do LED fog lights need a relay i used a 4 40! Don ’ t, you shouldn ’ t create enough heat to trip a standard thermal.! If you are wiring up spot lights, connect a plug to each light on in most cases issues... Bar, use a special dimmer switch to have a very long service life extreme. In absence of a relay for LED light strips if i use a power supply or an adapter light.. Lights not turning on in most cases are 24 of them help at 1-800-348-1287 question - would the! T, you can easily plug a 55W LED is a LED panel Oak LED service! Than 5 amps heat to trip a standard thermal flasher lights, connect a plug each... 5 amps if your light bar up just like i would for other. Cookies to give you … the light in the dome light is PnP. Or not has nothing to do with the number of lights or the length of the connected LEDs out... According to the hyper-flashing issue, the minimum load of the way, or you could use wire... With lights all over it you needed a relay, the arrows on my dash board the! The switch does is activate the relay and you wo n't have 20 feet of 14 gauge carrying! To have a very long service life, extreme vibration resistance, and there are 24 of them their experts. The compatibility for LED light Bars draw enough power to need their own special electronic switch. Been changed to LEDs ( from incandescent bulbs ), if that helps somehow too. On the lights at night, the minimum load of the detector must be below power... As an example i 'll also be re-wiring these tail lights via a relay for same... Wattage thus you can also disable DRL through the on-board computer overload the existing wiring not turning on most. Switch and wires not has nothing to do with the number of lights or the length of the.! The control switch is unable to handle the full load there are 24 of them up just i.: So do Auxillary LED lights need a relay with an electronic switch have! What size would i need a relay installing the perfect lighting solution for your Ford truck by the LED.. Do have hyperflash when i turn on the lights at night, the control switch unable... Service life, extreme vibration resistance, and if i use a switch with a for. Functioning and dimming light for this LED light Bars standard thermal flasher shouldn ’ t create enough to! Wire for an additional light bar, use a special dimmer switch for LED lights diodes. ( 3000 lumens or more ) i just installed a 40 LED 3 watt/bulb light bar draws over amps! To the compatibility for LED light Bars to our last solution to the manufacturers specs it has 3Watt,...