Quote:
Originally Posted by kcf7z
The illumination lights for the gauges not the warning lights —
|
Thanks. My analysis of the schematic is that there is no way the alternator and illumination lights are related (and I'm an EE.) No single failure, and that is what your description implies, can cause this, if the schematic is correct. So, the schematic may not be correct (I have a list of things not correct on the schematic, so this would be far from the first error in it.) Or, and I sadly admit this, I just don't see the connection, and in the end, I know I will be wrong about this. I can find ways for one to be a problem, or the other, but not both from the same, intermittent, problem.
So, my advise would be to fix one of the problems, and hope it fixes the other. I suggest going after the illumination lights. Because this can be done when it is cold and failing, and diagnostics can be done in your garage with the engine not running, giving time to diagnose things. I would start by wiggling fuse 12 in the fuse/relay panel to see if continuity there is the issue. Following that, I would get access to the back of the brightness resistor wheel part of the headlight switch and probe the voltages at both sides of the connector to see if there is an issue there.