3 watt bulb, same as the lighting bulbs...thanks...I have those available. I'll go put one in....
So, no luck. Bulb is in fine and voltage still drops like a stone. I followed the instrument cluster charge indicator light wiring to the terminal block (X4/10) in front of the battery in the passenger side fender well. Contact 61. It has voltage on it of about 13.95v then it starts dropping when the loads are put on it. Just continues to drop as loads stay on. When loads are turned off ( ac, lights. radio) the voltage on contact 61 starts to rise again. It goes directly to the smaller gauge wire that goes to the electrical plug on the back of the alternator then to the alternator voltage modulator field.

Any one know if the voltage modulator for the 16v is the same as the 8v? I would guess it is the same.

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Christopher Henkel
1990 190E 2.6 - Arctic white SOLD
1986 190E-16v - Blauswartze
1993 300CE - SOLD
2003 W208 CLK 320 Cabriolet - Magma Red