Strange electrical problem

[Formerly Steve Wilkinson]

Not-charging warning light came on, but there seems to be nothing wrong with the alternator: resting voltage 12.33 volts after three engine starts and a short period of running with headlights on, engine-idling voltage 13.8 volts. Interstate battery is about two years old.

Funny thing is, the no-charge light -stays- on, even with the ignition off.

Then, after about 20 minutes of running in this condition, I lost all instrumentation, needles went to zero across the board, and there are no warning lights (other than the no-charge light) when the ignition is first turned on. Also, the radio doesn't work: it powers up but only shows the word "protect."

Only unusual thing I notice is there's a goodly amount of that chalky, cream-colored electrolytic (?) deposit around the battery--none of it anywhere near the terminals or top of the battery, just around the hold-down clamps and periphery at the bottom.

Any suggestions, other than removing the battery and getting rid of the corrosion?

[Cajundaddy]

Stephan,

Check your ground connections to chassis. Similar problems have been reported and solved with a good clean ground connection. Those little DME computers like steady voltage.

Off topic: Is this the author Stephan Wilkinson? If so I read your book and thoroughly enjoyed it. Quite an adventure.

[Formerly Steve Wilkinson]

Yup, that's me.

Must say, that ground connection is quite short--like about six inches from battery to car--and it looks good as new, but I'll R&R it tomorrow.

Thanks!