Hi there:

It doesn't sound like a fuse problem as you are describing systems using at least 4 different fuses on both the upper and lower row so you can at least rule a blown or badly seated fuse out. ( eg Windows are on fuses 3 & 4 and the relay for them is on fuse 5 plus the antenna is on fuse 12)

Sounds like a major wiring (loom/harness) fault, Did you "pull" or disturb an multi-way connectors such as those between the engine bay and the bulkhead when fixing the overheating fault - or could the wiring loom have been damaged either when it overheated or in the repair?

Happy fault hunting.

Cheers

Jim

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Keep your Motor runnin'

Jim's '88 300SL