isn't all that in the alternator?
I know SQUAT about instruments and their function... just what fixes em!
he said that unplugging the alt turned out the light.
diode is in the alt, and a replacement regulator MIGHT fix it!
I'd plug in a good alt and see if the light goes out. our alts are SOOOO easy to wire in. one push in plug! great. plug in a good alt, and set it on the bracket. light off, golden!

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!