I recently dismantled the interior of my '56 Chevy Napco to repair the CUT radio hole. I didn't disconnect the wires from the ignition but I did pull the ignition out of the dash. Now I've installed the ignition into the dash and the headlight switch but not the gauge cluster. I tried starting the truck and there seems to be no power to the switch. Headlights don't come on anymore either.Do I need to have the gauge cluster installed to complete the circuit?? before the truck can be started? The weather is going to change to nasty cold and windy tomorrow. Of course I'm doing this in my driveway... Thanks in advance.