Cool, you probably have the loop style glow plugs, are they connected with each other via a wavy wire?
If so, when one goes bad, none will work. You'll have to pull each one and inspect. There are update kits available to change them to the new pencil style.

If you have power windows, check all your fuses first.
If you have manual windows, you'll need to inspect the regulator for possible obstructions.

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83 SD

84 CD