> So why do we even need a rear defrost > anyway!?! I've never even tried to turn mine on, its unnecessary. It's a government safety issue. It varies state-by-state in the US. Some states require all new cars sold in their state to have rear window defog. Some don't. On DeLoreans, it was probably easier to equip all cars with rear defog than to make it optional. They were under a lot of pressure to get into production quickly. And now people in sunny Florida like me are ready to buy expensive reproduction switches just to not have another thing on the car that's broken. Cha-ching$ Walt Tampa, FL