The cig lighter on my Silver Z does not work. I have 12 volts on the flange inside the cylinder of the lighter. My lighter works, tested it in the Gold car. I am guessing when you push the lighter in for it to heat the flange in the cylinder slides in the lighter and the circuit has ground somewhere for the lighter to heat? I cleaned up the lighter with a Dremel, cleaned up the the cylinder with a Dremel. Still nothing. Any ideas?