1993 Chevrolet Corvette Owner's Manual - Page 140

Power Mirror Defogger Do not attach a temporary vehicle ficense acrossthe defogger grid .on the rear window. (COW€RT/BLE WITHOUT HARDTOP) SpecMy Tieated Windshield (ZR-7) 4 (Power,MirrorDefogger): Press this buttqn to warm and defog the power mirrors. The power mirror defugger willturn off automatically afterabout 10 minutes .of usei You can also turn the defogger off by turning off the-ignitionor by pressing but'ton again. the The power mirror defogger operates only-whenthe engine is running. 4 Yolar ZR-1 windshield is specially treated to reduce the amount of solar heat entering your vehicle. Thismakes it easier for your air conilitioning system to keep you comfortable. The speciallytreated windshield will decrease the effectivedistance of some add-on electronic devices, such as garage door openers. If you use such a device, aimit through the opening at the bottom center of the windshield.