I expect you will find a orange wire going to column shift indicator lamp in the cars harness connector in the port where the new switch connector has a added black wire. Notice that orange wire comes down from the lamp fixture and not in with the switch wires. Anyway, Put it together as is will blow a fuse.
Easy method... Cut the orange wire out. Make that connection with one each male and female spade terminals beside the original connectors. This allows the extra black wire to dead end in that switch connector, isolated, out of harms way.
If you would rather unlatch the terminals of extra black and the orange, move wire terminals to different ports in these connectors, match the colors.