Originally Posted by terry zilis
The fog lamp switch is off. Twilight sentinel is always on.
What do you mean here? The lights are stuck on? If you turn the control ring clockwise until it clicks, it won't shut off?
When the fog lights start to glow all the rest of the symptoms occor at the same time. It does not matter if it is day or night, the fog lamp switich will not controll the lamps once all the problems start. All other equiptment affected will also not respond to thier switiches. I must tell you that the first time we noticed a problem was with the door locks and the sun roof. As time went on the list of malfunctions seemed to grow, or we just did not notice all of them right away.
Best I can say at this point is that when this many circuits are affected, there aren't a whole lot of places on the car that they have in common. The only two I can think of right now are the fuseboxes (the one under the dash, or the Maxifuse/Relay Center on the firewall under the hood), or the bulkhead connector where a large percentage of the wiring goes through the firewall between engine compartment and dashboard.
In fact, I think it would be good to methodically work your way through every harness connector you can find under the hood, especially the large ones on and around the firewall. Something'* gotta be loose or damaged there. There may be a problem under or behind the dash, too, but unless someone'* actively under there (e.g. putting in an alarm, remote starter or aftermarket stereo), it'* not likely that the dash wiring harness could go this far wrong by itself.
If nothing shows up above, open up the Maxifuse/Relay Center cover and check that it'* all clean and tight in there, especially the large power cable that comes in at top center.
As you can tell, I'm really guessing here...