Well, I changed all the fuses and no change in power windows or ACC.

With full vacuum (enough to shut the car off, don't know if leak would effect this) I cannot hear any movement in the ACC when i switch to different modes.

I guess the next step re: the power windows and ACC is to open up the console and take a look and see if they are getting power....

On the plus side, while looking at the grounds behind the instument cluster I changed the dash light rheostat thing and have dash lights for the first time in a few years! (very easy if you haven't tried it, been putting it off for a long time..)

small steps....

Merry Xmas

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1983 300 D