the only way the cluster could cause this is if the a/c was turned on before starting the car and somehow the battery light failed to illuminate[before turning to start position].then the alternator would not be getting exciter current and would not charge.this is unlikely but easy to check.much more probable that a/c straining the friendship with the grounds on the car.

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David S Poole
European Performance
Dallas, TX
4696880422

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
http://www.w108.org/gallery/albums/A...1159.thumb.jpg