Barracuda dash install

I assembled the whole thing as a unit. Gauges and harness in dash frame, stick assembled frame on the two lower bolts, lift and good to go.
I plan on that, but what about the wiring? Did you have the wiring connected to the car, and then connected it to the dash, or did you wire the dash on the workbench, then install the dash And wiring in the car?

What about your glove box? Did you connect it to the dash before or after installing the dash?