How to wire a light bar on a truck

Therefore, for a large light bar you can use a smaller cab switch and smaller wire on the switch circuit. If you have no wiring harness, use a relay if your light bar draws over amps. Connect the red power wire of the new light to the power wire of the old light. If the new LED work light or off-road light bar has an ATP or DT connector that you wish to utilize, corresponding ATP ( ATP-MPT ) or DT ( DT-MPT ) pigtails are available.

You should match or exceed the thickness of the wire off of the lights themselves. Make sure you SAE wire which is designed for automotive use. And make sure you wire them through a switch and mount the switch to the dashboard.

There are even tutorial in. I go though every step so after watching this you will know how. Route the harness from the mounted switch to the battery and to the LED light bar. If drilling through firewall be sure to use some kind of grommet so the wires do not rub) WIRE LOOM A. Here, we’ll describe how to install off-road lights to come on with your high beams and how to install them on a standalone rocker switch. Learn how to wire a relay for off road LED light bars and work lights.

Learn what a relay is, how it works, and why you should use one. Free Shipping on all orders of $or more to the Continental US. Not the fault of the harness or my wiring but the actual light ba itself was not good. The good part was Rampage was extremely forgiving and replaced the bar for me even after owning it for almost a year.

Roof-mounted light bars ;. After research and reading reviews from others, i founf it was common with that bar. Run the wire from the relay to the driving lights. Disconnect your battery, then use the wiring diagram or a test light to find the wire connecting the high beam switch to your headlights. Remove the harness leading to your headlight housing and move your test light probe to each pin until power is found with the high beam switch turned to the “on” position. Fill Your Cart With Color Today!

Clean up the install by securing the new wires to the existing harness under the hood with wire ties. This y-splitter harness features a length of 18” with 9” of wire for both tailgate light bar and trailer lights. If you are installing this light bar to your truck , but your flat pin connector is already being use LEDGlow offers a y-splitter harness that allows you to use your light bar along with your trailer lights simultaneously. The fuse is connected to red wire so if your LED light bar short circuits, the fuse will blow and prevent any further damage.

I just picked up a new truck and got the VERVE OX light bar. The relay acts as a railroad switch, directing the flow of energy to the right direction. I ran my ground wire through the firewall to the horn mount as shown in the picture above.

Cut a length of gauge wire to reach from the relay to the switch on the dash. You can run the wire through the firewall right next to the steering column. However my truck is fairly new and dont want to drill holes into the roof. Note: and can be reverse but our harnesses have them setup this way).

For example you could splice a wire off your high beam wire or off your backup light wire - connect to a ground. DIY: Wiring after-market lights. Hook up each cathode to the common resistor.

If each has its own resistor, wire each resistor to the positive terminal of the power supply. Wire the anodes (the other terminal of the LEDs) to an SPST switch. You now have an LED light circuit.

They are wired to come on with my high beams and never had an issue. I had them installed at a truck outfitter though, so not sure how they did them, sorry. I purchased a 40amp relay, a 25amp fuse and a pleather ofgauge wiring black and re and a switch from my local princess auto that has three little prongs on it. If the trailer is over inches wide also connect the brown wire to the triple light bar in the rear center of the trailer. Easy to install looks great on the truck.

Could not ask for a better product. Wire the other terminal of the switch to the negative terminal of the power supply. This is the place to find a light bar for a truck.

I have the same truck and use my aux switch for my strobes. Just pull off the side panel behind the drivers seat and you will find the relay. Should my light bar come on.

Light bar - light up the night. Just leave the other one out of the circuit. Use a DPDT switch and wire the other side of the switch to a 12v source through a small fuse (2A would be suitable).

My light bar is gauge wiring. Check out our huge selection of led light bars. Find everything from cubes to full light bars in spot or flood light output. Do not direct wire lights into the stock reverse light circuit that will draw more than amps max without using a relay. The stock reverse light circuit is not externally relayed in these trucks and it travels directly through the reverse light switch as well as the body control module.

Use a T-tap to tap the reverse light wire from the tailgate LED strip to positive.