last night when i shut the car off and took the key out of the ignition the battery light came on. i disconnected the batt cable because i figured it would drain overnight. this morning i took a look at the alternator and this cable was disconnected. i reconnected it but the light still stays on with the ignition off. if i pull the large alt plug the light goes off. with everything hooked up the glow plugs do not come on. but, it looks like once the car is started it still charges ok.

could this wire being disconnected for a period of time cause some kind of internal fault in the alternator?



link to image if it doesnt load: http://i.imgur.com/Q2qGP3S.jpg

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1981 NA 300D 310k miles

it makes the am radio have less static.

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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 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

must be unrelated to the problem then. sounds like a blown diode from some other research i did?

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1981 NA 300D 310k miles

Its a capacitor , it stops interference coming over on the radio.
Like when radio is off station and you can hear a whine which gets louder with engine rpm.
Nothing to do with the light i'm afraid.

Sounds like a blown rectifier diode. If you connect a meter across the battery, while running, and check VAC they will probably read high.

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Sam

84 300SD 350K+ miles ( Blue Belle )