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Charge light won't come on 200 1984

posted by  chris on  Sat Apr 19 07:34 CST 2003
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last visit: Mon Dec 18 04:58 CST 2000
[RELATED]

Thanks, Dave and Bob, for the very helpful responses.

I got a chuckle out of Bob's "one of the things we encounter when driving anything this far beyond the age of "usual trade-in". I'm at 225,000 miles, which draws looks of "shock and awe" from friends with American cars. (Particularly when I say I wouldn't hesitate to drive it from Chicago to LA.) The brake MC went out last week; I guess that's another 225,000 mile issue.

Anyway, back to the battery light. Something weird is going on.

Yesterday, I wasn't getting any warning lights at all in the test position, except the Oil light. Same thing this morning (so it wasn't just a hot engine issue.)

I just now went outside and tried again, to do Bob's tests. Now, everything came on except the battery light. I tried connecting a grounded test lead to the red wire connector, but this did nothing to the dash warning light. I tried running a fresh ground off the lug with the ground wire, but that didn't do anything, either.

So, about to give up, I crawled under the dash to test the power at the warning light. I touched it with the 12v test light, and the test light lit up, BUT SO DID THE WARNING LIGHT. AND IT STAYED ON. It's dimmer than it should be, but still clearly illuminated. I switched the key off, then turned it back on. Warning light still lit. Something about giving the bulb a fresh ground seemed to kick it back to life.

Any idea what's going on here? I expect this kind of nonsense on the 1975 Fiat Spider I'm restoring (could write a book about what that car's taught me about wiring)...not from my 240 wagon.

For now, I'm glad the bulb is glowing. I'm just not at all confident it's going to stay this way.






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