well you do make it sound complicated!
center black to +, body white to ground, and it's prolly prewired for any old generic application
the spring clips may be the ones that tension the element so it doesn't just spring back out when you punch it in, or they fit around the outside of the main unit so when you poke the assembly in the hole they 'wedge' against the back of the dash
Chief, more likely needs to get rid of all the modern accessories that use the lighter for their chargers
Bill