Rear window defroster

My 1970 Swinger came with a rear window defogger from the factory. Pulls air through one of the rear deck speaker grilles and blows it out through a long slot vent in the center of the rear deck. No heat involved, but it does a great job of circulating the warming air in the cabin to blow on the back window. Clears condensation quickly and does defrost the back window, but it takes some time. I like it well enough that I put one in my Dart GT which is where the under deck photos are from. It all plugs into the harness that runs under the drivers sill plate to the trunk. 2 speed switch.
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Original stuff in my 70 Swinger, below
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below - 2 small switches on the bottom of the dash frame below the headlight switch are factory switches for Map Light and Rear Air.
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