I don't know if your aftermarket switches have backlighting elements or not. If they do, you can use the orange wire that controls the backlighting for the OEM switches to power the backlight function on your switches. The orange wire is "hot" when the dashboard lights are on (when headlights/parking light switch is on), and it also changes intensity with the dashboard dimmer. I wired in after market Contura V switches from OTRATTW for my KC lights and Aux Reverse lights. I cut off the oem connector and used regular spade connectors on the switches' posts. I jumped the backlight wire through each switch. The black wire is the OEM ground for the backlight circuit.