It won't blow the fuse again. This drives me crazy because it's basically impossible to figure out the culprit. Yet I don't want to drive it because I could end up miles away from home with no oil pressure gauge, low oil sensor or brake lights, which are kind of essentials.
I checked from amp draw at the fuse box and get about 1 amp without brakes, and 6.5 amps with the brake pedal depressed. Is that second one high? I guess it wouldn't take much of a deviation to blow the fuse from there, but I have no idea what the deviation was or how to recreate it.
Guess I will pull the cluster and see if there are any warning lights wires that look suspect.
Should I just drive it a bit (without going too far) and see if it will blow again? Because aside from visually obvious problems, I don't know what to look for when no fault is present anymore.
Another thing that crossed my mind was the lamp monitoring unit ... since I had issues with other lights and fuses blowing, as mentioned in above post. Again kind of hard to test when it isn't doing anything offensive now.

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1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles
1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles
1995 S320, black/parchment--34,000 miles (Dad's car)