Just bought a used instrument cluster off e-bay for my `70 Torino GT. It has a switch located to the left of where the clock or tach would be. It looks like the fan blower switch, but you have to hold it in either up or down position. Otherwise it goes back to center. My guess is that the instrument cluster came out of a convertible and this switch lowers/raises the top. Can any of you help solve this mystery?