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All Idiot lights come on. 200 1984

posted by  someone claiming to be 81242DLB21FCA on  Sun Oct 19 03:48 CST 2003 [RELATED]

My experience is with an '81 but the warning light circuit may not have changed thru '84. The warning lights are connected to battery voltage on one side and through a diode to the small wire on the alternator on the other side. The individual sensors are connected between their light and each diode. So when either a sensor switch closes and connects to ground or the alternator output is less than battery voltage a light comes on. All this applies to those lights that normally come on when the key is in the run position before starting. I have a diagram I came email if you like. Unfortunately its 80kb so to big to post.






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