Today on our 2003 Mercedes M Class, specifically the ML 350, were going to install the Curt Circuit Protected 4-Pole Wiring Kit, part number 56146KIT. To begin our install, well first remove the tail light assembly here on the drivers side. There are two fasteners that well need to remove. Then well go ahead and pop the tail light assembly out of its position and use our circuit tester to identify which wires that well be tapping into to connect our converter box for our 4-pole. The blue wire next to the green wire is going to connect to our brown wire from our converter box. This will be our running light circuit.
Today on our 2003 Mercedes M Class, specifically the ML 350, well be installing the Draw-Tite Hitch, part number 7508. This is what our hitch look will like once its installed. Next, well go ahead and give you a couple of measurements to assist you in selecting accessories for new hitch. The center of the hitch pinhole is even with even for when the outside, most edge at the bumper and tape of the receiver tube is 17-1/2 inches from the ground. This will assist you in selecting accessories such a draw bar, a bike rack, or a cargo carrier. Now, lets go ahead with the insulation. Note, weve already gone ahead and removed the spare tire and this will make it easier to access the inside frame support brackets.