Originally Posted by macho_mike21
but for the photocell trick you still have to disable the DRL, right? Isn't there a wire to disable both that is farther down the line?
Okay, no offense to macho_mike21 here -- he just happened to have the latest post in this thread when I hit the reply button -- but let'* get some things straight. Listen up, everybody. Hey, you! In the back! Put that thing down!
Right. In no particular order:
1) The little tinted dome in the center of your dash is _not_ the light sensor for the Twilight Sentinel that'* responsible for turning on the lights at dusk. That dome contains the sunlight intensity sensor for your automatic air conditioning system. The light sensor (at least on the '93 SSEi) is a small, flush-mounted button-like lens at the left end of the dashboard near the VIN plate. If you don't believe me, just cover each object for at least 10-15 seconds, with the car running, and see which one turns on the lights.
2) The Twilight Sentinel can be switched off anytime if you don't want it turning the lights on at dusk: just rotate the control ring on the headlamp switch clockwise until it clicks.
3) The control ring for the Twilight Sentinel adjusts the length of time that it leaves the lights on after shutdown, from 5 seconds to 4 minutes. It does not adjust the light sensitivity. There is no adjustment for light sensitivity.
4) The dome-light-override button, on cars so equipped, will kill the DRLs for one driving session if it is pressed 3 times.
5) If you absolutely can't stand the DRLs being on, there is a ceramic resistor (on earlier cars) or relay box (on later ones) inside the left-side fender near the front which can be unplugged. You should not need to mess around in the dash, with any light sensors, or with the headlight switch.
Finally, if you must screw around with the wiring on your car, do the _minimum_ alterations needed to do whatever it is you want to do, since (1) it will make repairing the damage later on a little easier, and (2) side effects of what you do may not be obvious to you right away. For example, a lot of the lighting is not controlled directly by a switch someplace, but by output from a lamp controller that gets various inputs to it (e.g. switch positions, light sensor inputs, transmission settings).
When you change something, make sure you will be able to change it _back_ again, so for example when you rip out the light sensor in the middle of the dash, then discover that you've just disabled your air conditioning instead, make sure you can find the cut wires that fell into the hole so you can reattach them again.
I may sound like I'm getting overheated here, but when I get my hands on a used car for the first time, I invariably have to spend _far_ more time repairing previous "repairs" than I do repairing car parts that actually _broke_!