The Baja Designs OnX6+ Arc 40-inch Driving/Combo LED light bar (part 524003) is a curved bar from the OnX6 line, which the manufacturer calls the most elite generation of the OnX6 series — a curved LED light bar engineered to deliver serious output without sacrificing style. The manufacturer's standards listing for the family covers Exceeds MIL-STD810G (Mil-Spec Testing), IK10 Compliant (Mechanical Impact Testing), and IP69K (Waterproof up to 9ft & Pressure Washable), so it is built to survive rock strikes, mud, and power washing that would wear out a cheaper bar. Owners on user forums say the light output is strong; one Ford Tremor owner called it phenomenal. The Driving/Combo pattern suits buyers who want one bar for both near-field work and reach down the trail, and the curved profile is an easy fit on a grille or bumper where a straight bar can look awkward.
Fitment is universal, but the bar ships without a harness. This bar does not come with a wiring harness. You will need PN:640119 (Hi-Power w/Mode Switch 2-light max wiring harness), which is the piece that brings in the high/low function, and the manufacturer notes that High/Low Beam functionality (30 and 40-inch bars only - 50-inch bar is pre-dimmed). Plan for real install time: a Ford Tremor owner on a user forum said the job took me about 3 hours. Before buying, check your bumper's geometry, because owners on user forums report that frame horns can block a 40-inch housing, which is why the mounting point matters as much as the harness.
No. This bar does not come with a wiring harness. You will need PN:640119 (Hi-Power w/Mode Switch 2-light max wiring harness), according to the manufacturer.
Owners on user forums report only a small overhang. One Ford Tremor owner said the middle sits flush with the bumper and the ends stick out about half an inch.
Not necessarily. Owners on user forums report that the frame horns are in the way because Baja Designs housing is wider than other 40" due to them needing more heat management, and one bumper required modification to fit. Confirm clearance for your specific bumper before ordering.
The manufacturer publishes an installation sheet for this bar, and an owner on a user forum described the mounting as manageable for a first-timer because the manufacturer's video walked through it. Work with the battery ground disconnected, as the manufacturer's install sheet for its sister harness instructs. Common tools are a 10mm or 1/2-inch socket for the battery terminals and 1/2-inch and 3/4-inch drill bits if you mount an in-dash switch. Owners on user forums suggest running the bar's power through a relay rather than a factory upfitter circuit, because the bar draws more current than those circuits are built to carry. Some owners also find the supplied lead lengths longer than needed, so measure your route first and tie up all wiring away from hot, sharp, or moving parts.
