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 … So red wire with the fuse to the battery. Think they are even brighter now … I want to wire my light bar into my high beams but the LED system is different from the Halogen system. From the relay there will be a length of cord with a single white plug on the end. Wiring a LED Light Bar Aftermarket driving lights like spot lights and LED light bars offer the ultimate driving light solution for every vehicle. That prevents the light bar from pulling full power through the switch. 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. This is to connect your light bar to your high-beam switch. 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? This is not the case with the factory LED headlights. 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. 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. If your light bar switches off and your high beams remain on, you have successfully wired in your own LED light bar. 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. 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. 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. Black wire to the - side of the battery. It should be mounted high in the engine, out of the way of mud and water. One wire goes to the switch like mentioned above, the other wire goes to pin 30 on the relay. EDIT: I figured it out. Find out how easy they are to install! 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. 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.) Also, not all Light Bars are equal, some use 1watt LED's some 3 and even 5Watt LED's. 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. I have wired 3 of our work trucks up this way using the white wire with the green tracer as the high beam signal. 87 - outgoing power to the light bar. The power supply wire will run from the high-beam relay wiring harness to the driving or fog lights. 5. Start by taping one end of the power wire to the metal bumper support. Works great. Just learned I have negatively switched wiring for high beam. 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