The red battery light, the yellow light just to the right of it (circle with some marks on either side of it, ABS light I think) and the yellow triangle to the left of the fuel gauge all light up while starting the engine and they remain lit after the engine is running. They go away as soon as you rev the engine up to 100-1200rpm or so and they NEVER come back until the next time you start the engine. No battery or any other problems. Any ideas?

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1983 300SD.....169,000 miles but quit counting a few owners and unknown years ago!