Ok, my car has this feature and it isn't working. Lights don't stay on with it switched on and lights don't come on automatically either. The lights work fine as long as I pull out the light switch. What could be wrong? Light switch or something else i'm hoping someone can help me out.

hmm, yeah, that stupid twilight sentennial. I wish I just had DRL'* (for foggy days when I want lights and they don't turn on, and I don't turn 'em on cause I'm too lazy to pull that damn thing out). Anyhow, I would guess it'* the switch. The unit on your dash that monitors the light level is a really solid component, and rarely goes bad (less than 1 in ten thousand perhaps), and if it did, would more than likely have already been diagnosed and replaced at the factory.

so, the circuitry would be my second thing to check; first being the switch. switches go bad, it'* a fact. Moving parts go bad long before solid state components (the electronics controlling your lighting), so for that fact a lone, I would go to a junk yard, find another switch, and replace the one in your car. It'* prolly the easiest thing to try.

It'd be a good idea to check all of your fuses. That particualar system doesn't have a fuse of it'* own, but I always check the fuses first when something happens.

I guess, going back to the whole switch deal, once you pull it out to work on it, if you feel comfortable doing so, you could short the right wires (just two of them) to simulate the switch being on. that would tell you if it'* bad or not.

To be specific, the Twilight Sentinel is _not_ built into the headlight switch; the only component of the system that'* in the headlight switch is the rheostat ring that turns it on and off and sets the time delay for how long you want the lights to remain on after shutdown.

The actual controller and relay that seems to be failing is a separate unit that (on the '93 models and probably similar years as well) is located in the dash on the left side above the fusebox. It'* attached to the multi-function bracket that holds the fusebox hinge on the end.

Before replacing it outright, I would unplug and reconnect all the connectors, as pin oxidation is a constant problem in the dashboard and this may just be another case of the same thing. Unplugging stuff and plugging it in again is often enough to get it working. (Mine'* doing the same thing; it won't turn on the lights unless it'* pitch black outside, and if I wait too long under a streetlight, such as at a red light, it turns the lights off again.)

Somewhere around here is a post of mine that quotes the service manual on locating the Twilight Sentinel controller; will try to dig that up again...