[FJ FunJunkie]

If I get the switches for the Aux lisghts and the Offroad lights do they use the same pigtali as sold by Sparks Toyota? If so will they work with non-OEM lights, how hard would it be to make them work with non-OEM lights?

switches are switches, usually a 3 post switch. Some harneses are plug and play and others you must run wires and relays as well as a fusable link. It's not as difficut as it sounds if you are with someone who knows what they are doing and have a couple extra hands to pull wires and wrap n ziptie.