My '87 300e has the 80 amp alternator, installed by the PO in 1998, and a new battery. It starts immediatley, always has. I noticed today that with the headlights on (euros), the dash lights dim a bit when I put the heat on with the speed set at the highest level. I drove to Autozone to have the charging system tested, and they said it was fine. Does this sound like voltage regulator, alternator or something else? Or is this normal? Thanks.

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87 300e (white/black; amg body kit)
88 300ce (red/cream; amg body kit)
93 300ce cabrio (white/blue/blue top)
93 300ce cabrio (black/grey/black top)
98 ml 320 (totaled @ 137,000 miles)
99 clk320 (black/grey/black top)