Can you run LED lights without a relay?
A relay is an electrical device that changes the flow of electricity. It does this by using less electricity than there is in a circuit for high current. Without a relay, LEDs do not work. Without the light, the light does not work.
Do you need a relay for LED headlights?
LEDs Need Additional Equipment Unlike standard xenon or halogen bulbs that can be used on a plug-and-play basis (meaning you can unscrew the old bulb and replace it with a new one), LEDs require additional components such as a relay or heat sink under the hood.
Why do LED lights need a relay?
Relays can be used to switch a low-current trigger to high current, switch a circuit on or off, reverse polarity, and much more. When adding LED lights, such as off-road light bars, driving/work lights, or other auxiliary lights to a vehicle, you must add a circuit to power the light adequately.
Which is better LED or HID?
LED headlight bulbs are better and brighter for reflector lenses, while HIDs are better and brighter for vehicles with projector lenses. Although the science behind this is quite complex, the important thing to remember is that you get the appropriate technology for your type of headlight for the best results.
Why do you need a relay for LED lights?
Another reason you may want a relay is for the creative ways you can use electrical currents from things other than a physical switch. Let’s say you want have your LED Light Bar come on with your high beams, or reverse lights, for example.
Do you need to wire a dash switch for LED lights?
So you’d want another switch on your dash that you turn off and on. When it is off, and you put your high beams on, your LED light will still be off and vice versa. In this case, you need to wire the dash switch in between the trigger current, i.e. the line you spliced off your high beam wire or your backup light wire.
What kind of wire do you need for a relay?
In this case, you need to wire the dash switch in between the trigger current, i.e. the line you spliced off your high beam wire or your backup light wire. With our wiring harness, all you need to do is cut the wire coming from the switch to the 30 prong on the relay, and wire it to your high beam lead or your backup light wire.
What are the prongs on a relay light?
The relay will have 4 prongs on it, marked 30, 87, 85 and 86. Kind of cryptic isn’t it. Well if you are just going to use our wiring harness, and switch, you don’t need to know what any of this is, because it comes all pre-wired and plugged in together.