My handy brother-in-law insisted on installing my new electric furnace and it was a complete change from propane. It runs great but does not heat. Obviously those loose white and blue wires are important. They appear to go to a transformer on one end but where to on the other end? Heat strip? Bubba comes back tomorrow to 'fix' this.
It's a Goodman ARUF 182416 in the downflow position. Reconfiguring to the downflow caused the wiring diagram to be hidden. This also has evaporative coils for the new air conditioner that will be hooked up in the spring.