I took out the old radio on my 91 Lincoln Continental to install a new Dual head unit and I cant figure out how to hook some of the new wires. For instance, some of the new wires tell me to hook up to the ignition, I guess that is so that when you turn off your car the radio will shut off with it. This is what my stock radio already does. I was just wondering if you can tell me where to find the stock radio's wiring identification diagram. Thank You.