Connector behind dash

I was installing the dash in our 69 cuda, and have one extra connector. It is a 3 terminal T style connector that sits right above the ignition switch. I cannot find it on the wiring diagram. It has 5 wires 2 pink wires on one terminal 2 yellow wires on the second terminal and a yellow wire with a black tracer on the last terminal. Dash lights dont work so I'm assuming it is for the light circuit. Anyone have any ideas where it plugs in?