Yesterday all of the windows in my 83 300D died. I have changed the fuses in clips "a" and "b." I also replaced the switches.

When I start the car and have a rocker switch depressed, I get no voltage at the fuse box.

As I look at the wiring schematic, it shows power going to 2 window lift relays before the fuse box. Where are they? Could they be the culprit? Where do the grounds connect? What would make me lose all 4 at once?

Everything else in the car is working properly.

Wiring is not my strong suit. Any help is greatly appreciated!
Rich

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Rich

83 300D
98 E320 Wagon