I just finished installing the D3. So I took the yellow/black wire (the one you moved the pin), the black wire with the spade, the greenish e-brake wire, and the black ground wire from the factory harness and twisted them all together into one of those twisty wire nuts. Then I kept twisting the wires together and zip-tied them so they wouldn't come out of the wire nut easily. Some people have been using other ground points instead of the one from the factory harness, and that works too. Just remember in order for the bypass to work you take the yellow/black wire and the greenish e-brake wi