Remove the cross angle of the roadmaster bracket, then bolt item 2 and 3 with hex bolts, flat washers, lock washers, and hex nuts as shown in the diagram below. Note: be sure to position the mount brackets on the correct side. Place the main adapter weldment onto the pegs of the mounting brackets, the mounting brackets may have to be moved slightly to accommodate the pegs of item 1, then retighten the hex bolts. Once item 1 is slid all the way down on the pegs, pin item 1 with the quick pin assemblies (item 4). Your towed vehicle is now ready to be hooked up to your tow vehicle with your blue ox tow bar.