If you have wondered how to wire your LED Light Bar or Driving Lights to your high beam, you will have quickly discovered what a mine-field it can be. Wiring a LED Light Bar Aftermarket driving lights like spot lights and LED light bars offer the ultimate driving light solution for every vehicle. 5. EDIT: I figured it out. This is not the case with the factory LED headlights. The power supply wire will run from the high-beam relay wiring harness to the driving or fog lights. Because LED lights are polarity specific and Toyota's 60 and 80 series headlight circuits are negative switched which reverses polarity when dipping the headlights or going to high beam (which prevents LED's from working) - here is a wiring diagram to allow the circuit to remain polarity specific as LED's require. Start by taping one end of the power wire to the metal bumper support. At the light bar, the wire coming from 87 is your power in so all you should have left to do is ground the light bar itself. It should be mounted high in the engine, out of the way of mud and water. Black wire to the - side of the battery. One wire goes to the switch like mentioned above, the other wire goes to pin 30 on the relay. I wired 30 to battery, 85 to low beam on H4 plug, 86 to high beam, 87 to the postitve on led bar and grounded the negative on led bar. Leave at least one foot of wire hanging after the tape to leave enough slack for the connection to the lights. Just learned I have negatively switched wiring for high beam. I just bought a new 2020 Ram Rebel and I want to install a light bar with the ability to have it turn on and off with the factory led high beam headlights. Likewise, when the high beams are switched off, the light bar will shut off despite having the light bar … Particularly for vehicles like Toyota Hilux, Ford Ranger, BT-50 and many of the modern Nissan 4x4's which have negatively switched wiring system making it very difficult to wire … Think they are even brighter now … Installing Ridged 30in LED Light Bar - Would like Aux 1 up-fitter switch to activate power to light - Then use high beam switch on steering console to be able to flick on and off the LED light bar Also what is the color of the wire coming out of the back of the headlight for the high beams? If your light bar switches off and your high beams remain on, you have successfully wired in your own LED light bar. When I looked in the fuse panel I did not see a fuse or relay for the headlights to tap into for the 12v signal. From the relay there will be a length of cord with a single white plug on the end. That prevents the light bar from pulling full power through the switch. I have wired 3 of our work trucks up this way using the white wire with the green tracer as the high beam signal. Works great. I bought new relay and ran my own wiring. Run this wire to the back of the headlight, disconnect the plug and place the appropriate head light adapter in-line. Then the factory switch that came with the light bar cut that out and splice (the blue wire) in with the the wire the feed the high beams (after the hi/low switch on the handle bars.) If your using small LED cubes you might get away with wiring them directly into the high beam wire, but if you ever swap them out for a larger bar that draws more power you could damage the factory wiring. So red wire with the fuse to the battery. I want to wire an LED lightbar into the high beam circuit so that the lightbar can only be switched on if the high beams are on. This is to connect your light bar to your high-beam switch. 87 - outgoing power to the light bar. 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