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13926 Hull Street Rd, Chesterfield VA 23832

©2013 by WarningWorx. 

Full Size Warning Light Bar Installation Guide

August 4, 2019




Many Roof Mount Warning Light Bars can be installed at home with a little patience and about 1 to 2 hours of time. Ideally, a mechanic should Install it on your vehicles roof. Unfortunately this can cost upwards of 500 dollars just in labor. All of our roof mount warning light bars come with the necessary mounting hardware and can be installed on any car, truck, or heavy equipment.


Inspection: Take a look at your light and make sure you have all of the components. You should have the light bar itself with the wiring already attached. There should also  be a long white wire cover which runs into the control box along with two long wires (red and black) that are used to power the light. We also included two steel roof straps with matching L shaped brackets. This will be the only hardware you need to install it.

Options: There are many ways to install this light, take into account the type of vehicle before beginning. For cars and trucks up to 2500 it is recommended to use the steel roof straps outlined in installation option 1 below. For tow trucks, semi's, and big rigs it's recommended to use option 2 or 3 below.


Installation 1: These steel roof straps are meant to be modified to fit your particular car or truck. For extra paint protection you can attach a layer of soft material (rubber, foam, or tape) to the inside of the bracket to make sure the paint is not scratched. Open the side door of your vehicle and try to hook the curved bottom into the door jam. You may want to pull up on your weatherstripping and slide the hook underneath it (if the bulge in the weatherstripping is too large you can cut a small amount of rubber from the inside of it to make it lay flat. If there is a gap in between the door jam and inside of the hook (there often is) use a grinder or hacksaw to cut off the short section in the hook just enough to let it sit flush.


If you cut off too much the hook will not hold. You can also bend the remainder of the strap to match the contour of your car or truck. The other end of the roof strap is where you attach the L bracket that attached to the bottom of the light bar using that big bolt sticking out. Now take your light bar and center it on your vehicle where you want it to sit (make sure it lines up with the roof straps). Then take out the large bolt and slide it back through, tighten each large bolt evenly. The L bracket may be installed in any orientation, either on top of strap or below it, whichever works best for you application. Ensure that both the large and small bolt on each end of the L bracket are tight before operating the vehicle. If the light bar begins to smack up and down on your roof once you pick up speed you simply need to tighten the large bolts on each side.


Installation 2:  For Snow Plows, Wreckers, Tow Trucks, and Semi Trucks where roof straps are not an option, the light bar can be bolted directly to a headache rack, fiberglass roof, trailer roof, or any other flat surface. The black brackets on the bottom of the light bar have small round rubber feet. In the center of these feet you'll find a nut and bolt holding the feet in. These bolts can be removed and a larger bolt can be used to run through the feet into any surface for a solid mount.


Its usually easiest to adapt the light bar to existing mount points. By simply loosening the bolts that hold