My wife was driving the 77 300d today when the battery and two brake lights on the left of the cluster lit up. She shut it off and restarted and they were still on. Called me but when I arrived and started it, the problem was gone.
What might have caused it? I have no hypotheses.

Apologies on the spelling of occurrence. It's now too late to correct it.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13