If you install the load equalizers from ForMyMercedes, don't use the images from the equalizer description to figure out what wires go where.
The brown wire is ground. Count over 3 wires to find the rear brake light wire. Follow the traces on the board to confirm so you don't splice into the wrong wire (dohh). The wire colors are different on both sides.
The brown wire is ground. Count over 3 wires to find the rear brake light wire. Follow the traces on the board to confirm so you don't splice into the wrong wire (dohh). The wire colors are different on both sides.