Who has 63 darts

Forgot to ask this earlier. I just added the backup lights. Question is do the bulb sockets go on the top or bottom? I assume the top but I don't know. Also all I have is the factory wiring that runs from the bulbs to the from left corner of the trunk. Anybody out there have the switch that attaches to the pushbuttons to make these work? From the wiring diagram I see that the hot feed comes from the wiper switch. If anyone changed from a pushbutton to a 4 speed and has the switch left over, I will take it off your hands.