I’m putting the factory radio back in my car, It didn’t have a radio in it when I got it. What does the rear mount look like and how is it mounted? How do the speaker wires attach to the speaker, does the speaker have a separate harness or do you just have to hunt and peck to get the connector to seat?

The rear mount is part of the dash frame. A stud on the radio fits into a slot in a bracket that is tacked to dash frame. The speaker has two separate wires....one male spade and one female. Piece of cake.