If you are an American, or other country with approx 115V mains, you will need to wire the primary windings differently. You will need the parallel arrangement, as shown the the top right diagram above. This means that you will be running the White and Pink wires straight to the live input of your mains socket or switch. Standard live colour for US mains is White. Both of these wires will need to be joined together, and the mains input too. I would not recommend soldering three wires together unless it is necessary (i.e. the leads aren't long enough to reach your mains input). The other two wires on the transformer also connect together and run to the other side of the mains input. This means that Brown and Black will join and run to the Black coloured wire on the mains input. Careful soldering and insulation is of course recommended.